Method and device for sending synchronization signal block

Abstract

The invention provides a method and a device for sending a synchronization signal block. The method and the device are beneficial to reducing time-frequency resource conflicts existing among various SSB bursts. The method comprises the following steps: under the condition that time-frequency resources of a first SSB burst in a first type of SSB burst and a second SSB burst in a second type of SSB burst coincide, network equipment sends the first SSB burst on a time domain resource of the first SSB burst, and sends the second SSB burst on a time domain resource after adjustment of the second SSB burst. Wherein the sending starting time of the second SSB burst is later than the sending 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.

Description

[0001] This application claims priority to Chinese Patent Application No. 202410567835.9, filed on May 8, 2024, entitled “Method and Apparatus for Transmitting Synchronization Signal Blocks”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of wireless communication, and more particularly to a method and apparatus for transmitting a synchronization signal block. Background Technology

[0003] In carrier aggregation (CA) scenarios, access network devices send different types of synchronization signal block (SSB) bursts to terminals based on their specific needs or those of the network side. For example, one SSB burst can be configured for initial access by idle terminals or neighbor cell measurements of other terminals already connected to other serving cells, while another SSB burst can be configured for services with high latency requirements, such as secondary cell activation. Summary of the Invention

[0004] This application provides a method and apparatus for transmitting synchronization signal blocks, which can reduce resource waste and reduce conflicts caused by various SSB bursts.

[0005] Firstly, a method for transmitting synchronization signal blocks is provided, which can be executed by a network device or a module (such as a chip) configured in (or used in) the network device. The following explanation uses the execution of this method by a network device as an example.

[0006] The method includes: when a network device transmits a first SSB burst in a first type of SSB burst and a second SSB burst in a second type of SSB burst with overlapping time-frequency resources, the first SSB burst is transmitted on the time-domain resources of the first SSB burst, and the second SSB burst is transmitted on the adjusted time-domain resources of the second SSB burst. The transmission start time of the second SSB burst is later than the transmission completion time of the first SSB burst, and the first type of SSB burst has a higher priority than the second type of SSB burst.

[0007] According to the above scheme, if a network device transmits at least two types of SSB bursts, there may be a first SSB burst and a second SSB burst with overlapping time-frequency resources among these at least two types of SSB bursts. In this case, the network device can adjust the time-domain resources of the second SSB burst, which has a lower priority, so that the SSB burst of the second type of SSB burst is transmitted after the first SSB burst is transmitted, thereby reducing the problem of conflict between multiple SSB bursts.

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

[0009] According to the above scheme, optionally, the network device can send configuration information to the terminal to indicate the first transmission parameters and / or the second transmission parameters, so as to adjust the time-domain resources for transmitting the second SSB burst 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 the protocol.

[0010] In one possible implementation, the network device may send a first indication message to the terminal, which indicates that the second type of SSB burst should begin transmission. In this implementation, the adjusted time-domain resources are related to the first transmission parameters of the first type of SSB burst, the second transmission parameters of the second type of SSB burst, the transmission start time of the first SSB burst in the second type of SSB burst, and the reception time of the first indication message.

[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 burst, the above scheme further includes: the network device sending a third SSB burst after the second SSB burst in the second type of SSB burst, the time interval between the third SSB bursts, and the 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, the time interval being the interval between the transmission start times of adjacent SSB bursts.

[0012] Alternatively, the above scheme may also include: the network device sending a third SSB burst following the second SSB burst in the second type of SSB burst, wherein the time domain resources used to send the third SSB burst are the same as the time domain resources of the corresponding SSB burst in the second type of SSB burst before adjustment.

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

[0014] Under this scheme, network devices do not need to continuously send SSB bursts when there is no demand on the network side or the terminal side, thereby reducing the energy consumption of network devices. At the same time, for SSB bursts sent on demand and existing SSB bursts, the problem of conflicts between multiple SSB bursts is reduced by adjusting the second SSB burst in the lower-priority second type of SSB burst to be sent after the first SSB burst is sent.

[0015] Secondly, a method for transmitting synchronization signal blocks is provided, which can be executed by a network device or a module (such as a chip) configured in (or used in) the network device. The following explanation uses the execution of this method by a network device as an example.

[0016] The method includes: when the network device transmits the first SSB burst in the time domain of the first SSB burst and the second SSB burst in the second SSB burst have overlapping time-frequency resources, the network device transmits the first SSB burst on the time domain resources of the first SSB burst and discards the second SSB burst; the first SSB burst has a higher priority than the second SSB burst.

[0017] According to the above scheme, if a network device transmits at least two types of SSB bursts, there may be a first SSB burst and a second SSB burst with overlapping time-frequency resources. In this case, the network device can discard the second SSB burst, which has a lower priority, so that it can continue to transmit subsequent second SSB bursts after completing the transmission of the first SSB burst. By discarding the second SSB burst, the process and steps of adjusting the time-domain resources occupied by the second SSB burst are simplified, thereby improving the efficiency of reducing conflicts between multiple SSB bursts.

[0018] Thirdly, a method for receiving synchronization signal blocks is provided, which can be executed by a terminal or a module (such as a chip) configured in (or used in) the terminal. The following explanation uses the execution of this method by a terminal as an example.

[0019] The method includes: when a terminal receives a first SSB burst in a first type of SSB burst and a second SSB burst in a second type of SSB burst with overlapping time-frequency resources, the terminal receives the first SSB burst on the time-domain resources of the first SSB burst and receives the second SSB burst on the adjusted time-domain resources 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 first type of SSB burst has a higher priority than 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 may be a first SSB burst and a second SSB burst with overlapping time-frequency resources among these at least two types of SSB bursts. In this case, the terminal can adjust the time domain resources used to receive the second SSB burst in the second type of SSB burst with lower priority, so that it can receive the SSB burst in the second type of SSB burst after completing the reception of the first SSB burst, thereby reducing the problem of conflict between multiple SSB bursts.

[0021] In conjunction with the third aspect, in some implementations of the third aspect, the adjusted time-domain resources are related to the first transmission parameters of the first type of SSB burst and the second transmission parameters of the second type of SSB burst. The first transmission parameters include the transmission period of the first type of SSB burst, and the second transmission parameters include the transmission period of the second type of SSB burst.

[0022] According to the above scheme, optionally, the terminal can receive configuration information sent by the network device indicating the first transmission parameters and / or the second transmission parameters, so as to adjust the time-domain resources for receiving the second SSB burst 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 the protocol.

[0023] In one possible implementation, the terminal can receive first indication information sent by the network device, which is used to indicate that the second type of SSB burst has started transmission. In this implementation, the adjusted time-domain resources are related to the first transmission parameters of the first type of SSB burst, the second transmission parameters of the second type of SSB burst, the transmission start time of the first SSB burst in the second type of SSB burst, 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 burst, the above scheme further includes: the terminal receiving the third SSB burst after the second SSB burst in the second type of SSB burst, the time interval between the third SSB bursts, and the 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, the time interval being the interval between the transmission start times of adjacent SSB bursts.

[0025] Alternatively, the above scheme may also include: the terminal receiving a third SSB burst following the second SSB burst in the second type of SSB burst, wherein the time domain resources used to receive the third SSB burst are the same as the time domain resources of the corresponding SSB burst in the second type of SSB burst before adjustment.

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

[0027] Fourthly, a method for receiving synchronization signal blocks is provided, which can be executed by a terminal or a module (such as a chip) configured in (or used in) the terminal. The following explanation uses the execution of this method by a terminal as an example.

[0028] The method includes: when the time-frequency resources of the first SSB burst in the first type of SSB burst and the second SSB burst in the second type of SSB burst overlap, the terminal receives the first SSB burst on the time domain resources of the first SSB burst and abandons receiving the second SSB burst; the first type of SSB burst has 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 may be a first SSB burst and a second SSB burst with overlapping time-frequency resources. In this case, the terminal can abandon receiving the second SSB burst, which has a lower priority, so as to continue receiving subsequent second SSB bursts after completing the transmission of the first SSB burst. By abandoning the reception of the second SSB burst, the process and steps of adjusting the time domain resources used for receiving the second SSB burst are simplified, thereby improving the efficiency of reducing conflicts between multiple SSB bursts.

[0030] Fifthly, a communication apparatus is provided, comprising: a method for performing any possible implementation of any of the above aspects. Specifically, the apparatus includes a module for performing the method in any possible implementation of any of the above aspects.

[0031] In one design, the device may include modules that perform the methods / operations / steps / actions described in any of the above aspects. These modules may be hardware circuits, software, or a combination of hardware circuits and software.

[0032] In another design, the device is a communication chip, which may include input circuitry or interface for transmitting information or data, and output circuitry or interface for receiving information or data.

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

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

[0035] In a sixth aspect, a communication device is provided, comprising at least one processor, the at least one processor being configured to call and run a computer program from a memory, such that the device performs the method in any possible implementation of any of the preceding aspects.

[0036] Optionally, the device further includes a memory for storing instructions and data. The memory is coupled to the processor, which, when executing the instructions stored in the memory, can implement the methods described in the foregoing aspects.

[0037] Optionally, the device may also include a transmitter and a receiver, which may be separate or integrated together and referred to as a transceiver.

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

[0039] Eighthly, a computer-readable storage medium is provided that stores a computer program (also referred to as code or instructions) that, when executed on a computer, causes the computer to perform the methods in any possible implementation of any of the preceding aspects.

[0040] Ninthly, this application provides a chip system including at least one processor for supporting the implementation of the functions involved in any possible implementation of any of the above aspects, such as receiving or processing data involved in the above methods.

[0041] In one possible design, the chip system also includes a memory for storing program instructions and data, which may be located within or outside the processor.

[0042] Optionally, the chip system can be composed of chips or may include chips and other discrete components. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the architecture of the communication system used in the embodiments of this application;

[0044] Figure 2 This is a schematic diagram of a carrier aggregation scenario;

[0045] Figure 3 This is a schematic diagram of a secondary cell configuration;

[0046] Figure 4 This is a schematic diagram of the time-frequency structure of an SSB.

[0047] Figure 5 This is a schematic diagram of beam scanning for an SSB (Special Segment Bus).

[0048] Figure 6 This is a schematic diagram of the transmission cycle of an SSB burst;

[0049] Figure 7 This is a schematic diagram of a scenario where a hybrid SSB burst is transmitted, as provided in this application;

[0050] Figure 8 This is a schematic diagram of a scenario of sudden conflict in an SSB provided in this application;

[0051] Figure 9 This is a flowchart illustrating a method for transmitting a synchronization signal block according to an embodiment of this application;

[0052] Figure 10 This is a flowchart illustrating another method for transmitting a synchronization signal block provided in an embodiment of this application;

[0053] Figure 11 This is a schematic diagram illustrating a scenario for adjusting time-domain resources provided in an embodiment of this application;

[0054] Figure 12 This is a schematic diagram illustrating another scenario for adjusting time-domain resources provided in an embodiment of this application;

[0055] Figure 13 and Figure 14 This is a schematic block diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0056] Figure 1 This is a schematic diagram of the architecture of the communication system used in the embodiments of this application. Figure 1 The communication system 1000 shown 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 may include at least one access network device (such as...). Figure 1 110a and 110b in the above), may also include at least one terminal (such as Figure 1(Referring to 120a-120j in the original text). The terminal connects wirelessly to the access network equipment, and the access network equipment connects wirelessly or via a wired connection to the core network 200. The core network equipment and access network equipment can be independent physical devices, or the functions of the core network equipment and the logical functions of the access network equipment can be integrated into the same physical device, or a single physical device can integrate some of the functions of the core network equipment and some of the functions of the access network equipment. Terminals can connect to each other, and access network equipment can connect to each other, via wired or wireless means. Figure 1 This is just an illustration; the communication system may also include other access network devices, such as wireless repeaters and wireless backhaul devices. Figure 1 Not shown in the image.

[0057] The radio access network 100 can be a cellular system related to the 3rd generation partnership project (3GPP), such as a 4th generation mobile communication technology (4G) system (also known as a long term evolution (LTE) system), a 5th generation mobile communication technology (5G) system (also known as a new radio (NR) system), or it can be applied to next-generation mobile communication systems or other similar communication systems (such as a 6th generation mobile communication technology (6G) system), etc., without any specific limitations. The radio access network 100 can also be an open radio access network (open RAN, O-RAN or ORAN) or a cloud radio access network (CRAN). The wireless 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, etc. The wireless access network 100 can also be a communication system that integrates two or more of the above systems.

[0058] Access network equipment (RAN) devices are nodes in a radio access network, also known as RAN nodes or RAN equipment. RAN devices are used to help terminals achieve wireless access. Multiple RAN devices in the communication system 1000 can be nodes of the same type or different types.

[0059] In one possible scenario, access network equipment 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 and backhaul (IAB) node, or access network equipment in a mobile switching center non-terrestrial network (NTN) communication system. This means it can be deployed on high-altitude platforms or satellites. Access network equipment can also be a macro base station (such as...). Figure 1 110a), micro base stations or indoor stations (such as Figure 1 Access network equipment can be 110b), relay nodes or donor nodes, or wireless controllers in CRAN scenarios. It can also function as a base station in device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, drone communication, or machine-to-machine (M2M) communication. Optionally, access network equipment can also be servers, wearable devices, vehicles, or in-vehicle equipment. For example, in vehicle-to-everything (V2X) technology, the access network equipment can be a roadside unit (RSU).

[0060] In another possible scenario, multiple access network devices collaborate to assist terminals in achieving wireless access, with each access network device implementing a portion of the base station's functions. For example, access network devices can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs), etc. CUs and DUs can be set up separately or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio equipment or radio units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs). It is understood that access network devices can be CU nodes, DU nodes, or devices including both CU and DU nodes. Furthermore, CUs can be classified as access network devices within the RAN (RAN) or as access network devices within the core network; no restrictions are placed here.

[0061] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an O-RAN system, CU can also be called O-CU (Open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0062] A terminal is a device with wireless transceiver capabilities, capable of sending signals to or receiving signals from access network devices. Terminals can also be referred to as terminal devices, user equipment (UE), mobile stations, mobile terminals, etc. Terminals can be widely used in various scenarios, such as D2D, V2X communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, intelligent transportation, smart cities, etc. Specifically, a terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, aircraft, ship, robot, robotic arm, smart home device, etc. The embodiments of this application do not limit the specific technology or device form used in the terminal.

[0063] Access network devices and terminals can be fixed in location or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the access network devices and terminals.

[0064] The roles of access network devices and terminals can be relative. For example, Figure 1 The helicopter or drone 120i can be configured as a mobile access network device. For terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is an access network device; however, for access network device 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Alternatively, 110a and 120i can also communicate via an interface protocol between access network devices; in this case, 120i is also an access network device relative to 110a. Therefore, both access network devices and terminals can be collectively referred to as communication devices. Figure 1 110a and 110b in this context can be referred to as communication devices with access network equipment functions. Figure 1 The 120a-120j in the text can be referred to as communication devices with terminal functions.

[0065] Communication between access network devices and terminals, between access network devices, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0066] In the embodiments of this application, the functions of the access network device can be executed by modules (such as chips) within the access network device, or by a control subsystem that includes access network device functions. This control subsystem, including access network device functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0067] In this application, the access network device sends downlink signals or downlink information to the terminal, and the downlink signals or downlink information are carried on the downlink channel; the terminal sends uplink signals or uplink information to the access network device, and the uplink signals or uplink information are carried on the uplink channel. In order to communicate with the access network device, the terminal needs to establish a radio connection on a cell controlled by the access network device. The cell with which the terminal has established a radio connection is called the terminal's serving cell. When the terminal communicates with the serving cell, it may also be subject to interference from signals from neighboring cells.

[0068] In this application, the time-domain symbol can be an orthogonal frequency division multiplexing (OFDM) symbol or a discrete fourier transform-spread-OFDM (DFT-s-OFDM) symbol. Unless otherwise specified, the symbols used in the embodiments of this application refer to time-domain symbols.

[0069] It is 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 downlink data channels and downlink control channels, respectively. In different systems and different scenarios, data channels and control channels may have different names, and the embodiments of this application do not limit this.

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

[0071] 1. Carrier aggregation

[0072] Carrier aggregation technology in NR systems can integrate multi-frequency resources, aggregating spectrum resources of the same or different frequency bands for use by terminals, thereby improving the overall network resource utilization, increasing the transmission bandwidth of individual users, and improving user experience.

[0073] Figure 2 This is a schematic diagram of a carrier aggregation scenario. Carrier aggregation technology can combine multiple component carriers (CCs) together to support greater transmission bandwidth. Multiple carrier 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, Figure 2 The PCC (corresponding to cell 1, cell 1 is the primary cell, frequency F1), SCC 1 (corresponding to cell 2, cell 2 is the secondary cell, frequency F2) and SCC 2 (corresponding to cell 3, cell 3 is the secondary cell, frequency F3).

[0074] Figure 3 This is a schematic diagram of a secondary cell configuration. See also... Figure 3 At time 1, the terminal establishes a radio resource control (RRC) connection with cell 1. Cell 1 is the terminal's primary cell. The primary cell is the cell where the terminal initially establishes the connection, the cell where the terminal re-establishes the RRC connection, or the primary cell designated by the terminal during handover. The primary cell is responsible for RRC communication with the terminal.

[0075] Secondary cells are cells added during RRC reconfiguration to provide additional radio resources. See also Figure 3 At time 2, the terminal configures cell 2 as a secondary cell. There is no RRC communication between the secondary cell and the terminal; 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 transmit data through the secondary cell at this time.

[0076] See Figure 3At time 3, when certain conditions are met, the terminal activates the secondary cell, which switches from a deactivated state to an active state, allowing the terminal to transmit data with the secondary cell. These specific conditions include, for example, the terminal's pending data transmission exceeding a certain threshold, such as 50%. At specific moments in the above process, the terminal needs to utilize the SSB sent by the access network equipment in the secondary cell to perform operations such as cell search, measurement, and synchronization.

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

[0078] 2. Control signaling of Layer 1 (L1) and Layer 2 (L2)

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

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

[0081] The size of the DCI payload may vary depending on the scenario, which may 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, or 3, used to indicate uplink scheduling), DCI format 1_X (X can be 0, 1, 2, or 3, used to indicate 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, or 2, used for sidelink scheduling), and DCI format 4_X (X can be 0, 1, or 2, used for multicast broadcast service (MBS) scheduling). The information that DCI can carry is comprehensive and complex, including control information necessary for normal communication between the terminal and the network.

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

[0083] 3. SSB

[0084] The SSB includes the primary synchronization signal (PSS), the secondary synchronization signal (SSS), and the physical broadcast channel (PBCH). When a terminal moves within the system, it continuously performs cell search and measurement based on the SSB, selects the appropriate SSB beam, and achieves initial access and mobility management for the terminal.

[0085] Figure 4 This is a schematic diagram illustrating the time-frequency resources occupied by an SSB. For example... Figure 4 As shown, each SSB occupies four consecutive symbols in the time domain and 20 resource blocks (RBs) in the frequency domain, which is 240 subcarriers. The PSS and SSS occupy the first and third symbols of the SSB, respectively, for a total of 127 subcarriers in the frequency domain. The PBCH (which includes the demodulation reference signal (DMRS)) occupies the second and fourth symbols of the entire SSB, and also occupies 48 subcarriers at each end of the third symbol.

[0086] Figure 5 This is a schematic diagram of beam scanning for an SSB (Special Segment Bus). For example... Figure 5 As shown, in NR, SSBs are transmitted in the form of beam scanning. This means that an access network device can transmit a beam direction at a given moment, and by transmitting different beams at multiple moments, it can cover the required directions for the entire cell. Assuming that N SSBs are transmitted in different directions in a single beam scan, all SSBs transmitted in this round are called an SSB burst. The maximum value of N is, for example, 64. Alternatively, it can be described as the set of all synchronization signal / physical broadcast channel blocks (SS / PBCH blocks) within a single beam scan, called an SSB burst.

[0087] Figure 6 This is a schematic diagram of the transmission cycle of an SSB burst. For example... Figure 6As shown, when the terminal initially accesses the network, the default SSB burst transmission period is 20ms, and the SSB burst transmission window is in half-frame (5ms in length) units. That is, within this 20ms period, the SSB burst is always limited to a 5ms (half-frame) time interval, and no SSB is transmitted for the remaining 15ms.

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

[0089] Currently, network equipment (i.e., the aforementioned access network equipment) mainly uses the aforementioned Figure 6 The transmission cycle shown continuously sends SSB bursts to enable initial terminal access and mobility management. However, even when there is no SSB requirement on the network or user side, the network device will still continuously send SSB bursts through the above transmission cycle, resulting in unnecessary network device power consumption.

[0090] To reduce unnecessary network device power consumption, network devices can send one or more SSB bursts on demand in their serving cell. When there is no demand from either the network or the user, the network device does not send the on-demand SSB. When there is demand from either the network or the user, the network device sends the on-demand SSB burst until the demand is met or other triggering conditions are satisfied. Optionally, to ensure that the cell can be used for serving cell search and initial access by idle terminals while the network device is sending SSB bursts on demand, the network device can also simultaneously and continuously send at least one SSB burst on the serving cell at a longer interval, for example, through the aforementioned... Figure 6 The transmission period shown in the figure is a continuous transmission of SSB bursts.

[0091] Figure 7 This is a schematic diagram illustrating a scenario of hybrid SSB burst transmission provided in this application. For example... Figure 7As shown, the network device configures two types of SSB bursts on the serving cell via RRC. SSB1 bursts are continuously transmitted with a period of 160ms, used for initial access by idle terminals or neighbor cell measurements of other terminals already connected to other serving cells. SSB2 bursts are transmitted on demand with a period of 5ms, and can be used for services with high latency requirements, such as secondary cell activation. When there is a service requirement to use an SSB2 burst, the network device can initiate SSB2 burst transmission according to this requirement, and stop the transmission of the SSB2 burst when the requirement is completed or other triggering conditions are met.

[0092] However, under certain conditions, the frequency domain resources configured for the aforementioned multiple SSB bursts may conflict. For example, when a network device sends the aforementioned... Figure 7 Taking SSB1 and SSB2 bursts as examples, in the event of a conflict, the frequency resources occupied by the SSB in SSB1 and the SSB in SSB2 overlap by at least one RB. When multiple SSB bursts conflict, the terminal will receive all of them simultaneously, resulting in two different interpretations of the time-frequency resource (i.e., it can be interpreted as an SSB in SSB1 or an SSB in SSB2).

[0093] For example, continue to send the above via network device. Figure 7 Taking SSB1 burst and SSB2 burst as examples, Figure 8 This is a schematic diagram illustrating a scenario of sudden SSB conflict provided in this application. For example... Figure 8 As shown, there is an SSB in the first type of SSB burst (i.e., SSB#1) that conflicts with the SSB burst in the second type of SSB burst (i.e., SSB#2). Figure 8 (The second SSB#1 conflicts with the first SSB#2, the third SSB#1, and the second SSB#2). The conflicting SSBs occupy at least one overlapping subcarrier in the frequency domain and at least one overlapping symbol in the time domain. At the moment of conflict, the terminal will simultaneously receive both the first and second type of SSB bursts, resulting in two different interpretations of the time-frequency resource for the terminal.

[0094] In view of this, embodiments of this application provide a method for transmitting synchronization signal blocks. In this method, when multiple SSB bursts have overlapping time-frequency resources, network devices and terminals can adjust the time-domain resources of lower-priority SSB bursts so that the time-domain resources occupied by lower-priority SSB bursts do not overlap with the time-domain resources occupied by higher-priority SSB bursts, thereby reducing the ambiguity of terminal receiving SSBs.

[0095] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems will be described in detail below through specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings. The synchronization signal block transmission method provided in the embodiments of this application can be applied to the above-mentioned... Figure 1 The communication system shown allows for interactive execution of the method by a network device and a terminal. The network device performs the method of transmitting synchronization signal blocks, and the terminal performs the method of receiving synchronization signal blocks. The network device could be, for example, a... Figure 1 As shown in Figures 110a and 110b, the terminal may be, for example, 110a and 110b. Figure 1 The numbers 120a-120j are shown in the image.

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

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

[0098] The second SSB burst begins transmission later than the first SSB burst ends transmission, and the first type of SSB burst has a higher priority than the second type of SSB burst. The network device is the aforementioned access network device. The overlap of time-frequency resources between the first and second SSB bursts can be complete or partial overlap; this application does not impose any restrictions on this.

[0099] Optionally, the priority of the two types of SSB bursts can be determined based on the transmission time of the first round of SSB bursts in each type of SSB burst. For example, the SSB burst that sends one round of SSB bursts first is the first type of SSB burst, 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. This first round of the second type of SSB burst can be sent after the first round of the first type of SSB burst, or it can be sent after other rounds of the first type of SSB burst. This application does not impose any restrictions on this). Alternatively, the priority of the two types of SSB bursts can be predefined by the protocol.

[0100] When the first SSB burst in the first type of SSB burst and the second SSB burst in the second type of SSB burst have overlapping 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 used to send the second SSB burst until after the first SSB burst is completed. Correspondingly, the terminal maintains the time domain resources used to receive the first SSB burst unchanged, and after completing the reception of the first SSB burst, receives the second SSB burst on the adjusted time domain resources.

[0101] In any of the aforementioned implementations, 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 Method 1: Adjust the temporal resources of the second SSB burst and the third SSB burst following the second SSB burst in the second type of SSB burst.

[0103] After completing the transmission of the second SSB burst, the network device transmits the third SSB burst, which follows the second SSB burst in the second type of 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. This time interval is the interval between the transmission start times of adjacent SSB bursts, for example, the interval between the transmission start times of two adjacent third SSB bursts. Optionally, this time interval can also be the interval between the transmission completion times of adjacent SSB bursts, or the interval between the transmission start time of one SSB burst and the transmission completion time of the other among two adjacent SSB bursts, etc. The determination of this time interval depends on the definition of the transmission period of the SSB burst, and this application does not impose any restrictions on it.

[0105] In this implementation method 1, since the time-domain resources occupied by the second SSB burst are located after those occupied by the first SSB burst, meaning the time-domain resources occupied by the second SSB burst have a backward offset in the time domain, when the network device subsequently sends a third SSB burst, the time-domain resources occupied by each third SSB burst are also offset backward in the time domain by the offset of the time-domain resources occupied by the second SSB burst. This ensures that the transmission period of the second type of SSB bursts conforms to the second type of SSB burst transmission cycle between the second SSB burst and the first third SSB burst, and between the third SSB bursts. In other words, this implementation method 1 is equivalent to shifting the time-domain resources occupied by each SSB burst starting from the second SSB burst backward in the time domain according to this offset.

[0106] Accordingly, the terminal adjusts its time-domain resources for receiving Type II SSB bursts according to the same rules as the network equipment.

[0107] Implementation Method 2: Adjust only the temporal resources of the second SSB burst.

[0108] Send the third SSB burst following the second SSB burst in the second type of SSB burst. The time domain resources used to send the third SSB burst are the same as the time domain resources of the corresponding SSB burst in the second type of SSB burst before the adjustment.

[0109] In this implementation method 2, since the time domain resources occupied by the second SSB burst are after those occupied by the first SSB burst, meaning the time domain resources occupied by the second SSB burst have a backward offset in the time domain, the network device does not adjust the time domain resources for sending the third SSB burst if the third SSB burst does not conflict with the first type of SSB burst.

[0110] Accordingly, the terminal adjusts its time-domain resources for receiving Type II SSB bursts according to the same rules as the network equipment.

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

[0112] Subsequent embodiments will be described using the example of a continuously transmitted SSB burst of the first type and an on-demand transmitted SSB burst of the second type. When the first type of SSB burst is an on-demand transmitted SSB burst, its implementation method can refer to the implementation method of the continuously transmitted SSB burst of the first type, and will not be described in detail in this application.

[0113] The synchronization signal block transmission method provided in this application embodiment allows a network device to adjust the time-domain resources used by the second SSB burst (which has a lower transmission priority) to be after the time-domain resources used by the first SSB burst when the time-frequency resources of the first SSB burst and the second SSB burst in the first type of SSB burst overlap. The terminal then receives the second SSB burst through the adjusted time-domain resources, 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] The following section provides a detailed explanation of how network devices adjust the transmission of the second SSB burst time domain resources and how terminals adjust the reception of the second SSB burst time domain resources.

[0115] Specifically, the factors for adjusting the time domain resources 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 start time of the first round of second type of SSB burst.

[0116] For example, a network device can determine the time-domain resources for sending a conflicting first SSB burst based on the transmission period and first transmission window of the first type of SSB burst. Similarly, it can determine the time-domain resources for sending a conflicting second SSB burst based on the transmission period, second transmission window, and start time of the first round of second type SSB bursts. The network device then adjusts the time-domain resources for sending the second SSB burst to be after the time-domain resources for sending the first SSB burst. For example, the time when the first SSB burst is completed can be used as the start time for sending the second SSB burst, or any time after the completion of the first SSB burst and before the next first type of SSB burst after the first SSB burst can be used as the start time for sending the second SSB burst (while the completion time of the second SSB burst must be earlier than or equal to the start time of the next first type of SSB burst after the first SSB burst).

[0117] The transmission period and the first transmission window of the first type of SSB burst can be carried in the first transmission parameters of the first type of SSB burst; or the first transmission parameters may only include the transmission period of the first type of SSB burst, and the first transmission window is predefined by the protocol.

[0118] The transmission period and second transmission window of the Type 2 SSB burst can be carried in the second transmission parameters of the Type 2 SSB burst; or the second transmission parameters can only include the transmission period of the Type 2 SSB burst, and the second transmission window is predefined by the protocol. The start time for sending the first round of Type 2 SSB bursts is determined according to actual needs. These actual needs can be network-side or terminal-side needs. For example, the actual need can be a service requirement existing at the terminal. The terminal sends a service request to the network device requesting this service requirement. After the network device confirms the requirement, it determines the start time for sending the first round of Type 2 SSB bursts based on the service requirement and synchronizes this time to the terminal. Alternatively, the actual need can be a service requirement determined by the network side itself. The network device determines the start time for sending the first round of Type 2 SSB bursts based on the service requirement and synchronizes this time to the terminal.

[0119] Below, taking the first transmission parameter including the transmission period of the first type of SSB burst and the second transmission parameter including the transmission period of the second type of SSB burst as an example, the transmission parameter can be the configuration information when configuring SSB for network devices. 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 one possible implementation, the network device can adjust the time-domain resources for transmitting the second SSB burst based on the first transmission parameters of the first type of SSB burst and the second transmission parameters of the second type of SSB burst. Correspondingly, the terminal can adjust the time-domain resources for receiving the second SSB burst based on the first transmission parameters of the first type of SSB burst and the second transmission parameters of the second type of SSB burst.

[0121] In another possible implementation, the network device can adjust the time-domain resources for transmitting the second SSB burst based on the first transmission parameters of the first type of SSB burst and the second transmission parameters of the second type of SSB burst. Correspondingly, the terminal can receive the indication information sent by the network device to determine the time-domain resources used by the adjusted second SSB burst.

[0122] In both implementations described above, the network device can determine the time-frequency resources occupied by each type of SSB burst and each type of SSB burst based on the first transmission parameters of the type of SSB burst and the second transmission parameters of the type of SSB burst. Using these time-frequency resources, it can predict the existence of overlapping time-frequency resources between the first and second SSB bursts. Based on the time-domain resources occupied by the first and second SSB bursts, the time-domain resources for transmitting the second SSB burst are redefined (i.e., the adjusted time-domain resources mentioned earlier).

[0123] The following example illustrates how to adjust the time-domain resources of a second SSB burst, using the example that both network devices and terminals adjust the time-domain resources of the second SSB burst according to the first transmission parameters of the first type of SSB burst and the second transmission parameters of the second type of SSB burst.

[0124] One possible implementation is that the first and second transmission parameters can be predefined by the protocol, meaning that both the network device and the terminal obtain the predefined first and second transmission parameters according to the protocol.

[0125] Another possible implementation is that 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 can obtain the first transmission parameter and the second transmission parameter.

[0126] In this implementation, Figure 9 This is a flowchart illustrating a method for transmitting a synchronization signal block according to an embodiment of this application. Figure 9 As shown, the method includes:

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

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

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

[0130] This configuration information can be sent by the network device to the terminal when establishing an RRC connection with the terminal, so that the terminal can determine the time and frequency resources used to receive the first type of SSB burst based on the configuration information.

[0131] S902, the network device adjusts the time domain resources for sending the second SSB burst according to the first transmission parameters of the first type of SSB burst and the second transmission parameters of the second type of SSB burst.

[0132] Accordingly, the terminal adjusts the time domain resources for receiving the second SSB burst based on the first transmission parameters of the first type of SSB burst and the second transmission parameters 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 parameters, obtains the transmission period of the second type of SSB burst from the second transmission parameters, and combines the first transmission window, the second transmission window, and the transmission start time of the first round of the second type of SSB burst predefined by the protocol to adjust the time domain resources for transmitting the second SSB burst to the time domain resources after the time domain resources for transmitting the first SSB burst are completed.

[0134] Accordingly, the terminal obtains the transmission period of the first type of SSB burst from the first transmission parameters, obtains the transmission period of the second type of SSB burst from the second transmission parameters, and adjusts the time domain resources for receiving the second SSB burst by combining the first transmission window, the second transmission window, and the transmission start time of the first round of the second type of SSB burst predefined by the protocol. The time domain resources for receiving the second SSB burst by the terminal are the same as the time domain resources for sending the second SSB burst adjusted by the network device.

[0135] The method provided in this application embodiment allows a network device to synchronize the SSB configuration parameters of the first type of SSB burst and the second type of SSB burst with the terminal by sending configuration information indicating the first transmission parameters and / or the second transmission parameters in advance. This provides a basis for the network device and the terminal to adjust the time domain resources of the second SSB burst according to the SSB configuration parameters.

[0136] The following section will provide a detailed explanation of how to adjust the time domain resources of the second SSB burst, taking the example of a network device instructing a terminal to start transmitting a second type of SSB burst. Figure 10 This is a flowchart illustrating another method for transmitting a synchronization signal block provided in an embodiment of this application. For example... Figure 10 As shown, the method may include:

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

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

[0139] This step can be referred to as step S901 above, and will not be repeated here.

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

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

[0142] The first indication information is used to indicate the start of transmission of the second type of SSB burst. This first indication information can be DCI signaling or MAC CE signaling sent by the network device, used to indicate to the terminal that the network device will start transmitting the first round of the second type of SSB burst at a certain time.

[0143] S1003. The network device adjusts the time domain resources for sending the second SSB burst according to the first transmission parameters of the first type of SSB burst, the second transmission parameters of the second type of SSB burst, and the time when the second type of SSB burst begins to be transmitted.

[0144] Accordingly, the terminal adjusts the time domain resources for receiving the second SSB burst based on the first transmission parameters of the first type of SSB burst, the second transmission parameters of the second type of SSB burst, and the first indication information.

[0145] The network device adjusts the time-domain resources for transmitting the second SSB burst based on the first transmission parameters of the first type of SSB burst, the second transmission parameters of the second type of SSB burst, and the transmission start time of the first SSB burst in the second type of SSB burst. Correspondingly, the terminal adjusts the time-domain resources for receiving the second SSB burst based on the first transmission parameters of the first type of SSB burst, the second transmission parameters of the second type of SSB burst, and the transmission start time of the first SSB burst in the second type of SSB burst obtained from the first indication information.

[0146] Optionally, the network device can also adjust the time-domain resources for transmitting the second SSB burst based on the first transmission parameters of the first type of SSB burst, the second transmission parameters of the second type of SSB burst, the transmission start time of the first SSB burst in the second type of SSB burst, and the reception time of the first indication information. Correspondingly, the terminal adjusts the time-domain resources for receiving the second SSB burst based on the first transmission parameters of the first type of SSB burst, the second transmission parameters of the second type of SSB burst, the transmission start time of the first SSB burst in the second type of SSB burst obtained from the first indication information, and the reception time of the first indication information. Specific implementation details can be found in subsequent articles. Figure 12 The example shown.

[0147] The method provided in this application embodiment involves a network device sending configuration information indicating first and / or second transmission parameters to a terminal in advance to synchronize the SSB configuration parameters of the first type of SSB burst and the second type of SSB burst with the terminal. The network device also sends first indication information to the terminal to indicate the time when the second type of SSB burst starts transmission, thereby providing an adjustment basis for the network device and the terminal to adjust the time domain resources of the second SSB burst according to the SSB configuration parameters.

[0148] For ease of understanding, the following example uses only two types of SSB bursts, namely the first type and the second type, and the third type of SSB burst is adjusted synchronously according to the second type of SSB burst (the first type of SSB burst is a continuously transmitted burst, and the second type of SSB burst is a burst sent on demand). Through various different situations, the adjustment method described in the above method embodiment will be illustrated by example.

[0149] For ease of explanation, the transmission period of the first type of SSB burst is defined as PSSB1, and the transmission period of the second type of SSB burst is defined as PSSB2. This transmission period can be one of 5ms, 10ms, 20ms, 40ms, 80ms, or 160ms, or it can be a new value representing the time length different from the above six values. This application does not restrict the value of the transmission period. The first transmission window is defined as TSSB1, and the second transmission window is defined as TSSB2. This transmission window can be a window predefined by the protocol, such as half a frame (5ms), or it can be a transmission window indicated by the pattern of the actually transmitted SSB burst. For example, when the total subframe length between the subframe containing the first SSB and the subframe containing the last transmitted SSB in the SSB burst pattern is 3 subframes, the transmission window can be 3ms. Where PSSB1 ≥ TSSB1, PSSB2 ≥ TSSB2. The transmission start time of the first SSB burst is defined as T.

[0150] Based on the above definition, the adjustment methods described in the foregoing method embodiments will be illustrated in the following two cases.

[0151] Case 1: The first SSB outbreak in the second type of SSB outbreak, which is not a second type of SSB outbreak.

[0152] Figure 11 This is a schematic diagram illustrating a scenario for adjusting time-domain resources provided in an embodiment of this application. For example... Figure 11 As shown, the second SSB burst is the third round of SSB bursts in the second type of SSB burst.

[0153] The start time for the second round of Type II SSB burst transmission is T0.

[0154] At time T0 (T - T0 ≥ TSSB2), the network device starts to send the second - round second - type SSB burst. That is, the starting time of the second - round second - type SSB burst is T0, and until time T, the network device still needs to continue sending the second - type SSB burst. At this time, there is an overlap between the time - domain resources of the third - round second - type SSB burst and the time - domain resources of the first - type SSB burst.

[0155] If (T - T0) - TSSB2 < PSSB2 < (T - T0)+TSSB1, the network device starts to send the third - round second - type SSB burst from time T + TSSB1 (that is, adjusts the time - domain resources for sending the third - round second - type SSB burst to after the time - domain resources for sending the first - type SSB burst). Correspondingly, the terminal starts to receive the third - round second - type SSB burst from time T + TSSB1, and the starting time of the third - round second - type SSB burst is T + TSSB1.

[0156] If within the time period from time T + TSSB1 to time T + TSSB1+PSSB2, the network device still needs to send the fourth - round second - type SSB burst, and PSSB2 ≤ PSSB1 - TSSB1 - TSSB2, the network device sends the fourth - round second - type SSB burst at time T + TSSB1+PSSB2. Correspondingly, the terminal receives the fourth - round second - type SSB burst at time T + TSSB1+PSSB2.

[0157] A specific implementation method is that the network device can start to send the third - round second - type SSB burst in the next sub - frame of the sub - frame where time T + TSSB1 is located, and the terminal can start to receive the third - round second - type SSB burst in the next sub - frame of the sub - frame where time T + TSSB1 is located. If within the time period from time T + TSSB1 to time T + TSSB1+PSSB2, the network device still needs to send the fourth - round second - type SSB burst, and PSSB2 ≤ PSSB1 - TSSB1 - TSSB2, the network device sends the fourth - round second - type SSB burst at time T + TSSB1+PSSB2. Correspondingly, the terminal receives the fourth - round second - type SSB burst at time T + TSSB1+PSSB2.

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

[0159] Figure 12 It is a schematic diagram of another scenario for adjusting time - domain resources provided by the embodiments of this application. As Figure 12 shown, the second SSB burst is the first - round SSB burst in the second - type SSB bursts.

[0160] Among them, the starting moment of sending the first indication information is T1 (alternatively, this T1 can also be the moment when the terminal receives the first indication information, that is, the aforementioned receiving moment of the first indication information, and this application does not limit this). The difference between the sending moment T1 of the first indication information and the starting moment of sending the first round of the second type of SSB burst (that is, the time offset from the first indication information to the starting moment of sending the first round of the second type of SSB burst) is td, and this td can be predefined by the protocol or preconfigured by the network device RRC. Optionally, this td can also be the difference between the hybrid automatic repeat request-acknowledgment (HARQ-ACK) feedback of the first indication information and the starting moment of sending the first round of the second type of SSB burst.

[0161] At the moment T1 (TSSB2 + td ≥ T - T1 > 0), the network device sends the first indication information. At this time, there is an overlapping situation between the time-domain resources of the first round of the second type of SSB burst and the time-domain resources of the first type of SSB burst.

[0162] If (T - T1) - TSSB2 < td < (T - T1) + TSSB1, the network device starts to send the first round of the second type of SSB burst from the moment T + TSSB1 (that is, adjusts the time-domain resources for sending the first round of the second type of SSB burst to after the time-domain resources for sending the first type of SSB burst). Correspondingly, the terminal starts to receive the first round of the second type of SSB burst from the moment T + TSSB1.

[0163] If within the time period from the moment T + TSSB1 to the moment T + TSSB1 + PSSB2, the network device still needs to send the second round of the second type of SSB burst, and PSSB2 ≤ PSSB1 - TSSB1 - TSSB2, the network device sends the second round of the second type of SSB burst at the moment T + TSSB1 + PSSB2. Correspondingly, the terminal receives the second round of the second type of SSB burst at the moment T + TSSB1 + PSSB2.

[0164] A specific implementation method is that the network device can start to send the first round of the second type of SSB burst from the next subframe of the subframe where the moment T + TSSB1 is located, and the terminal can start to receive the first round of the second type of SSB burst from the next subframe of the subframe where the moment T + TSSB1 is located. If within the time period from the moment T + TSSB1 to the moment T + TSSB1 + PSSB2, the network device still needs to send the second round of the second type of SSB burst, and PSSB2 ≤ PSSB1 - TSSB1 - TSSB2, the network device sends the second round of the second type of SSB burst at the moment T + TSSB1 + PSSB2. Correspondingly, the terminal receives the second round of the second type of SSB burst at the moment T + TSSB1 + PSSB2.

[0165] Furthermore, in cases 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 overlapping time-frequency resources, this application also provides another method for transmitting synchronization signal blocks to reduce the problem of conflict between 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 abandons receiving the second SSB burst.

[0167] Among them, the first type of SSB burst has a higher priority than the second type of SSB burst.

[0168] Optionally, the priority of the two types of SSB bursts can be determined based on the transmission time of the first round of SSB bursts in each type of SSB burst. For example, the SSB burst that sends one round of SSB bursts first is the first type of SSB burst, 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. This first round of the second type of SSB burst can be sent after the first round of the first type of SSB burst, or it can be sent after other rounds of the first type of SSB burst. This application does not impose any restrictions on this). Alternatively, the priority of the two types of SSB bursts can be predefined by the protocol.

[0169] If the first SSB burst in the first type of SSB burst and the second SSB burst in the second type of SSB burst have overlapping time-frequency resources, the network device discards the second SSB burst that has overlapping time-frequency resources with the first SSB burst, and according to the time domain resources occupied by the second type of SSB burst, after completing the transmission of the first SSB burst, transmits the second type of SSB burst after the second SSB burst.

[0170] Accordingly, the terminal abandons receiving the second SSB burst that overlaps with the time-frequency resources of the first SSB burst, and according to the time domain resources occupied by the second type of SSB burst, after completing the reception of the first SSB burst, receives the second type of SSB burst after the second SSB burst.

[0171] The method provided in this application reduces the conflict of multiple SSB bursts by discarding a second SSB burst that overlaps with the time-frequency resources of the first SSB burst. By discarding the second SSB burst, 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 reducing the conflict of multiple SSB bursts.

[0172] Furthermore, in the event that the second type of SSB burst transmitted on demand conflicts with the physical downlink shared channel or physical downlink control channel allocated by the network device for the terminal, this application also provides another method for transmitting synchronization signal blocks to avoid the problem of SSB bursts conflicting with the physical downlink shared channel and physical downlink control channel.

[0173] After sending the first indication information, the network device begins sending a Type II SSB burst, which has a higher priority than the Physical Downlink Shared Channel. Correspondingly, after receiving the first indication information, if the time-frequency resources occupied by the Type II SSB burst conflict with the time-frequency resources occupied by the Physical Downlink Shared Channel designated for the terminal by the network device, the terminal will receive the Type II SSB burst on that time-frequency resource and will not receive the Physical Downlink Shared Channel.

[0174] Among them, the time-frequency resources occupied by the second type of SSB burst and the physical downlink shared channel are in the time domain in terms of time domain symbols and in the frequency domain in terms of RB.

[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 approach is that after sending the first indication information, the network device begins sending a second type of SSB burst, with the second type of SSB burst having a higher priority than 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 designated for the terminal by the network device, the terminal will receive the second type of SSB burst on that time-frequency resource and will not receive the physical downlink control channel.

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

[0178] In existing solutions, network devices can configure multiple on-demand SSBs on a single cell, with different types of on-demand SSBs exhibiting different time-domain and frequency-domain characteristics. In one possible scenario, the network device may also configure a continuously transmitting SSB on the cell, which is used for initial access by idle terminals or for neighbor cell measurements of other terminals already connected to other serving cells.

[0179] If the frequency domain resources of on-demand SSBs overlap with those of continuously transmitted SSBs, and an on-demand SSB is triggered at a certain time (i.e., it begins transmitting on the cell at that time), then at some time after that time, the time-frequency resources occupied by the on-demand SSB may conflict with those occupied by the continuously transmitted SSB. In other words, the continuously transmitted SSB and the on-demand SSB configured in that cell represent two conflicting time-frequency resources. This could lead to the terminal interpreting the conflicting time-frequency resources in two different ways, causing ambiguity in the terminal's SSB reception.

[0180] Based on this, this application provides another method for transmitting and receiving synchronization signal blocks, defining the transmission priority of different types of SSBs, which helps to avoid the problem of ambiguity in terminal SSB reception that may be caused by configuring multiple SSBs on a single cell by network devices.

[0181] Suppose that the network equipment in the first cell is configured with two types of SSBs: Type I SSB and Type II SSB. Type I SSB is a continuously transmitting SSB, and Type II SSB is an on-demand transmitting SSB. For a description of the continuously transmitting SSB and the on-demand transmitting SSB, please refer to the description above; it will not be repeated here.

[0182] If the frequency domain resources of a Type I SSB overlap with those of a Type II SSB, the transmission priority of the Type I SSB can be specified to be higher than that of the Type II SSB. Taking the overlap of frequency domain resources between the first SSB in the Type I SSB and the second SSB in the Type II SSB as an example, after the Type II SSB is triggered for transmission, if the transmission of the first SSB conflicts with the transmission of the second SSB, or if their time-frequency resources overlap, the network device will prioritize ensuring the transmission of the SSB with the higher transmission priority and abandon the transmission of the SSB with the lower transmission priority. That is, the network device will transmit the first SSB in the first cell and abandon the transmission of the second SSB. For the terminal, in the case of overlapping time-frequency resources between the first and second SSBs, the terminal receives the first SSB at the overlapping time-frequency domain location (or on the conflicting time-frequency resources). In this case, the terminal device is not expected to receive the second SSB. In this application, the overlap of time-frequency resources between the first SSB and the second SSB means that the first SSB and the second SSB have overlapping frequency domain resources and also overlapping time domain resources.

[0183] The network device transmits a first SSB in the first cell and abandons transmitting a second SSB, which includes: the network device transmits the first SSB on the time-frequency resources where the first SSB and the second SSB configured for the first cell overlap, and abandons transmitting the second SSB.

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

[0185] Optionally, the first SSB can be an SSB, or an SS / PBCH block. For example, the first SSB is an SSB within a first SSB burst, and the first SSB burst is a round of SSB bursts within a first type of SSB. The second SSB can be an SSB, or an SS / PBCH block. For example, the second SSB is an SSB within a second SSB burst, and the second SSB burst can be a round of SSB bursts within a second type of SSB. The network device abandoning the transmission of the second SSB can include: the network device abandoning the transmission of the second SSB burst.

[0186] The network device can also send a second indication message to the terminal, which indicates the transmission of a Type II SSB. Accordingly, the terminal device receives the second indication message.

[0187] Furthermore, if the frequency domain resources of on-demand SSBs do not overlap with those of continuously transmitted SSBs, when an on-demand SSB is triggered at a certain moment, that is, when an on-demand SSB starts transmitting on the cell at a certain moment, then at some point after that moment, the network device may simultaneously transmit continuously transmitted SSBs and on-demand transmitted SSBs in the same cell. The terminal would need to receive both types of SSBs on the cell at the same time, which would place excessive demands on the terminal's processing capabilities and would be difficult to achieve.

[0188] Based on this, this application provides another method for transmitting and receiving synchronization signal blocks. By defining the receiving priorities of different types of SSBs, the implementation complexity of the terminal simultaneously receiving two types of conflicting time-domain resources of SSBs on the cell is reduced.

[0189] Taking the configuration of Type I and Type II SSBs on the first cell as an example, Type I SSBs are continuously transmitted, while Type II SSBs are transmitted on demand. If the frequency domain resources of the first SSB in Type I and the second SSB in Type II do not overlap, the reception priority of Type II SSBs can be specified to be higher than that of Type I SSBs. After Type II SSB transmission is triggered, if the frequency domain resources of the first and second SSBs do not overlap but their time domain resources overlap, the network device will transmit the second SSB. Alternatively, the network device can choose to transmit the first SSB or not. Accordingly, based on the SSB reception priority, the terminal will prioritize receiving the second SSB; in this case, the terminal is not expected to receive the first SSB.

[0190] In this application, the overlap of time-domain resources between the first SSB and the second SSB can mean that the time-domain resources of the first SSB and the second SSB partially overlap, or it can mean that the time-domain resources of the first SSB and the second SSB completely overlap.

[0191] The network device can also send a second indication message to the terminal, which indicates the transmission of a Type II SSB. Accordingly, the terminal device receives the second indication message.

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

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

[0194] Consider the case where the time-frequency resources of the first SSB and the SSB overlap:

[0195] For example, when there is a conflict between the transmission of the first SSB burst and the transmission of the second SSB burst, the network device abandons the transmission of the second SSB burst in this round and prioritizes the transmission of the first SSB burst in one round.

[0196] For example, when a conflict occurs between the transmission of the first SSB and the second SSB, the network device abandons the transmission of the second SSB and prioritizes the transmission of the first SSB.

[0197] Consider the case where the frequency domain resources of the first SSB and the second SSB do not overlap, but their time domain resources overlap:

[0198] For example, after the second type of SSB is triggered and transmitted, on the time domain resources where the first SSB burst and the second SSB burst overlap, the terminal device will prioritize receiving the second SSB burst, and the terminal device will not be expected to receive the first SSB burst.

[0199] For example, after the second type of SSB is triggered to be transmitted, at the time domain position where the first SSB and the second SSB overlap, the terminal will prioritize receiving the second SSB signal, and the terminal will not be expected to receive the first SSB signal.

[0200] In the scenario of secondary cell activation, the SSBs continuously transmitted on the secondary cell need to be located in the first active downlink bandwidth in the frequency domain. However, currently, there is no restriction on the frequency domain location of SSBs transmitted on demand. If the SSBs transmitted on demand are configured outside the first active downlink bandwidth in the frequency domain, then after the secondary cell is activated, the terminal needs to switch to that first active downlink bandwidth for data transmission and other operations. This would place excessive demands on the terminal's processing capabilities and complicate implementation.

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

[0202] For example, the first cell is the secondary cell of the terminal. The network device configures an on-demand SSB in the first cell, which can be used to activate the first cell. When activating the first cell, the network device can configure the on-demand SSB to be located in the first active downlink bandwidth portion in the frequency domain. In this way, the terminal can activate the first cell in the first active downlink bandwidth portion, which helps to avoid power consumption and latency issues caused by BWP handover. At the same time, it helps to avoid placing excessive demands on the terminal's processing capabilities due to inter-frequency measurements, thus reducing the implementation complexity of the terminal.

[0203] The method provided in this application allows network devices and terminals to avoid conflicts between SSB bursts and the Physical Downlink Shared Channel (PHS Channel) or Physical Downlink Control Channel (PHS Channel) by defining the transmission priorities of the second type of SSB bursts sent on demand and those allocated to the terminal. By prioritizing the transmission of the second SSB bursts, the process and steps for adjusting the time-domain resources occupied by the second type of SSB bursts are simplified, thereby improving the efficiency of resolving conflicts between SSB bursts and the PHS Channel.

[0204] Figure 13 and Figure 14This is a schematic block diagram of a communication device provided in an embodiment of this application. These communication devices can be used to implement the functions of network devices or terminals in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments.

[0205] like Figure 13 As shown, the communication device 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 device 1300 can be used to perform the actions performed by the network device or terminal in the above method embodiments. Alternatively, the device 1300 can be a component (e.g., a chip) configured in the network device or terminal. The processing module 1320 is used to perform processing-related operations of the network device or terminal in the above method embodiments. The transceiver module 1310 is used to perform receiving and transmitting-related operations of the network device or terminal in the above method embodiments.

[0207] Optionally, the transceiver module 1310 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiments. The receiving module is used to perform the receiving operation in the above method embodiments.

[0208] It should be noted that device 1300 may include a transmitting module but not a receiving module. Alternatively, device 1300 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by device 1300 includes both transmitting and receiving actions.

[0209] Optionally, the device 1300 is used to perform the actions performed by the network device in the above embodiments. For details, please refer to the relevant descriptions in the above method embodiments; they will not be repeated here.

[0210] Optionally, the device 1300 also includes a processing module 1320 for performing data processing.

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

[0212] When the communication device 1300 is used to implement the functions of the network device as described in the above method embodiment: the transceiver module 1310 is used to: when the time-frequency resources of the first SSB burst in the first type of SSB burst and the second SSB burst in the second type of SSB burst overlap, send the first SSB burst on the time domain resources of the first SSB burst, and send the second SSB burst on the time domain resources after the adjustment of the second SSB burst; the start time of the transmission of the second SSB burst is later than the completion time of the transmission 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 also used to: send configuration information to the terminal, the configuration information being used to indicate the first transmission parameters and / or the second transmission parameters.

[0214] Optionally, the transceiver module 1310 is also used to: send a first indication message to the terminal, the first indication message being used to indicate that the second type SSB burst transmission has begun.

[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: send the third SSB burst after the second SSB burst in the second type of SSB burst, the time interval between the third SSB bursts, and the 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.

[0216] Alternatively, the transceiver module 1310 is also used to: send a third SSB burst after the second SSB burst in the second type of SSB burst, wherein the time domain resources used for sending the third SSB burst are the same as the time domain resources of the corresponding SSB burst in the second type of SSB burst before adjustment.

[0217] When the communication device 1300 is used to implement the functions of the terminal as described in the aforementioned method embodiment: the transceiver module 1310 is used to: receive the first SSB burst on the time domain resources of the first SSB burst and receive the second SSB burst on the adjusted time domain resources of the second SSB burst when the time-frequency resources of the first SSB burst in the first type of SSB burst and the second SSB burst in the second type of SSB burst overlap; 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 module 1310 is further configured to: receive configuration information sent by the network device, the configuration information being used to indicate a first transmission parameter and / or a second transmission parameter.

[0219] Optionally, the transceiver module 1310 is further configured to: 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 SSB burst;

[0220] Optionally, if the second SSB burst is not the last SSB burst in the second type of SSB burst, the transceiver module 1310 is also configured to: receive the third SSB burst after the second SSB burst in the second type of SSB burst, the time interval between the third SSB bursts, and the 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 module 1310 is also used to: receive a third SSB burst following the second SSB burst in the second type of SSB burst, wherein the time domain resources of the received third SSB burst are the same as the time domain resources of the corresponding SSB burst in the second type of SSB burst before adjustment.

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

[0223] For a more detailed description of the configuration information and the first indication information, please refer to the relevant descriptions in the method embodiments above, which will not be repeated here.

[0224] Figure 14 This is a schematic block diagram of another communication device 1400 provided in the embodiments of this application, such as... Figure 14 As shown, device 1400 includes one or more processors 1410 and interface circuitry 1420. The one or more processors 1410 and interface circuitry 1420 are coupled to each other. It is understood that interface circuitry 1420 can be a transceiver or an input / output interface. Optionally, device 1400 may also include memory 1430 for storing instructions executed by processor 1410, or storing input data required by processor 1410 to execute instructions, or storing data generated after processor 1410 executes instructions. Sometimes, interface circuitry 1420 can also be understood as part of processor 1410, in which case device 1400 includes processor 1410.

[0225] The one or more processors 1410 and the memory 1430 can be configured separately or integrated, and there is no limitation on this.

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

[0227] When the aforementioned communication device is a chip applied to a network device or 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 receiving information from the terminal can be understood as the information being first received by other modules (such as radio frequency modules or antennas) in the access network device, and then sent to the chip of the network device by these modules. The chip of the network device sending information to the terminal can be understood as the information being first sent to other modules (such as radio frequency modules or antennas) in the network device, and then sent to the terminal by these modules.

[0228] This application also provides a computer-readable storage medium for storing a computer program that, when run on a computer, enables the execution of the aforementioned method for transmitting or receiving the synchronization signal block. Alternatively, the computer program includes instructions for implementing the aforementioned method for transmitting or receiving the synchronization signal block.

[0229] This application also provides a computer program product, including: a computer program or instructions, which, when the computer program or instructions are run on a computer, cause the above-mentioned method for sending or receiving the synchronization signal block to be executed.

[0230] It is understood that the processor in the embodiments of this application can be a central processing unit, or 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. A general-purpose processor can be a microprocessor or any conventional processor.

[0231] The method steps in the embodiments of this application can be implemented in hardware or in software instructions executable by a processor. The software instructions can consist of corresponding software modules, which can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, portable hard disks, compact disc read-only memory (CD-ROM), or any other form of storage medium well known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. The storage medium can also be a component of the processor. The processor and storage medium can reside in an application-specific integrated circuit (ASIC). Alternatively, the ASIC can reside in a base station or terminal. The processor and storage medium can also exist as discrete components in the base station or terminal.

[0232] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0233] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0234] In the embodiments of this application, the terms and English abbreviations, such as SSB burst, SSB pattern, time interval, etc., are merely exemplary examples given for ease of description and should not constitute any limitation on this application. This application does not preclude the possibility of defining other terms that can achieve the same or similar functions in existing or future agreements.

[0235] The terms "first," "second," and various numerical designations mentioned in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0236] In the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can represent: 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, and c can be single or multiple.

[0237] In the embodiments of this application, "send" and "receive" refer to the direction of signal transmission. For example, "send first indication information to the terminal" can be understood as the destination of the first indication information being the terminal, which may include direct transmission via the air interface or indirect transmission via the air interface by other units or modules. "Receive first indication information from the access network device" can be understood as the source of the first indication information being the access network device, which may include direct reception from the access network device via the air interface or indirect reception from the access network device via the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0238] In other words, sending and receiving can occur between devices, such as between a terminal and a network device; or they can occur within a device, such as between components, modules, chips, software modules, or hardware modules within a device via a bus, wiring, or interface.

Claims

1. A method for transmitting a synchronization signal block, characterized in that, include: In the case where the time-frequency resources of the first SSB in the first type of synchronization signal block (SSB) overlap with those of the second SSB in the second type of SSB, the first SSB is transmitted in the first cell, and the transmission of the second SSB is abandoned. The first type of SSB is a continuously transmitted SSB, and the second type of SSB is a transmitted SSB on demand.

2. The method according to claim 1, characterized in that, The first SSB is an SSB in a first SSB burst, and the second SSB is an SSB in a second SSB burst; The decision to abandon sending the second SSB includes: Abandon sending the second SSB burst.

3. The method according to claim 1 or 2, characterized in that, The method further includes: A second indication message is sent to the terminal, the second indication message being used to instruct the second type of SSB to start transmission.

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

5. A method for receiving a synchronization signal block, characterized in that, include: In the case where the time-frequency resources of the first SSB in the first type of synchronization signal block (SSB) overlap with those of the second SSB in the second type of SSB, the first SSB is received in the first cell. The first type of SSB is a continuously transmitted SSB, and the second type of SSB is a transmitted SSB on demand.

6. A method for receiving a synchronization signal block, characterized in that, include: When the frequency domain resources of the first SSB in the first type of synchronization signal block SSB and the time domain resources of the second SSB in the second type of SSB do not overlap, the second SSB is received. The first type of SSB is a continuously transmitted SSB, and the second type of SSB is a transmitted SSB on demand.

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

8. The method according to any one of claims 5 to 7, characterized in that, The method further includes: Receive a second indication message from the network device, the second indication message being used to instruct the second type of SSB to start transmission.

9. A communication device, characterized in that, It includes modules for implementing the method as described in any one of claims 1 to 4, or modules for implementing the method as described in any one of claims 5 to 8.

10. A communication device, characterized in that, The method includes at least one processor coupled to a memory for storing a program or instructions that, when executed by the at least one processor, cause the method of any one of claims 1 to 4 to be performed, or cause the method of any one of claims 5 to 8 to be performed.

11. A computer-readable storage medium, characterized in that, Used to store a computer program that, when run on a communication device, causes the method as described in any one of claims 1 to 4 to be executed, or causes the method as described in any one of claims 5 to 8 to be executed.

12. A computer program product, characterized in that, include: A computer program or instruction that, when executed, causes the method as claimed in any one of claims 1 to 4 to be performed, or causes the method as claimed in any one of claims 5 to 8 to be performed.

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