A communication method, apparatus, system, and storage medium

Abstract

The application provides a communication method, device, system and storage medium, aiming at improving network resource utilization or improving network connection stability. The communication method of the application comprises: sending first indication information, the first indication information is used for indicating a target transmission mode of a synchronization signal block, the target transmission mode comprises any one of multiple transmission modes, and the synchronization signal block corresponding to each transmission mode is different in period; receiving the synchronization signal block, the synchronization signal block is sent based on the target transmission mode. In the above implementation scheme, the terminal device can inform the network device of the demand of the terminal device for the synchronization signal block through the first indication information, so that the network device can dynamically adjust the parameters when sending the synchronization signal block based on the demand of the terminal device for the synchronization signal block, that is, it can flexibly adapt to the demand of the network in different load states, thereby improving the network resource utilization or improving the network connection stability.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method, device, system and storage medium. Background Art

[0002] With the rapid development of communication technology, communication network architectures are gradually evolving towards higher density and greater complexity. Network energy consumption and synchronization signal transmission efficiency have become significant constraints on this development. The Synchronization Signal Block (SSB) is the core signaling used by terminal devices to implement cell search, time synchronization, frequency synchronization, and cell selection. Its transmission mechanism directly impacts network energy efficiency and connection performance.

[0003] However, currently synchronization signal blocks are usually broadcast using fixed parameters, and synchronization signal blocks broadcast using fixed parameters may be unable to flexibly adapt to the needs of the network under different load conditions, thereby resulting in low network resource utilization or poor network connection stability. Summary of the Invention

[0004] The present application provides a communication method, device, system and storage medium, the purpose of which is to improve network resource utilization or improve network connection stability.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] The first aspect of the present application provides a communication method, which can be applied to a terminal device. For example, the terminal device can be a communication device, or the terminal device can be a partial component in the communication device (such as a processor or circuit or chip or chip system responsible for the communication function), or the terminal device can also be a logic module or software that can realize all or part of the functions of the communication device. The following is an example of a terminal device. In this method, the terminal device sends first indication information, and the first indication information is used to indicate a target transmission mode of a synchronization signal block. The target transmission mode includes any one of a plurality of transmission modes. The parameters corresponding to the plurality of transmission modes include a period of the synchronization signal block, and the period of the synchronization signal block corresponding to each transmission mode is different; the terminal device receives a synchronization signal block, and the synchronization signal block is sent based on the target transmission mode.

[0007] In the above implementation scheme, the terminal device can request the target transmission mode of the synchronization signal block from the network device through the first indication information, that is, the terminal device can inform the network device of the terminal device's demand for the synchronization signal block through the first indication information, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0008] In a possible implementation of the first aspect of the present application, the multiple transmission modes include at least one of a first transmission mode, a second transmission mode, a third transmission mode, or a fourth transmission mode, the period of the synchronization signal block corresponding to the first transmission mode is smaller than the period of the synchronization signal block corresponding to the second transmission mode, the period of the synchronization signal block corresponding to the second transmission mode is smaller than the period of the synchronization signal block corresponding to the third transmission mode, and the period of the synchronization signal block corresponding to the third transmission mode is smaller than the period of the synchronization signal block corresponding to the fourth transmission mode. In the above implementation, multiple transmission modes of the synchronization signal block can be determined based on the value range of the parameters used when transmitting the synchronization signal block. For example, the first transmission mode, the second transmission mode, the third transmission mode, and the fourth transmission mode can be determined, and the parameters corresponding to each transmission mode are different, that is, when different transmission modes are used to transmit the synchronization signal block, the parameters used can be different. Specifically, the parameters corresponding to the transmission mode can include a period, that is, the transmission period of the synchronization signal block, and the period corresponding to the first transmission mode can be smaller than the period corresponding to the second transmission mode, the period corresponding to the second transmission mode can be smaller than the period corresponding to the third transmission mode, and the period corresponding to the third transmission mode can be smaller than the period corresponding to the fourth transmission mode.

[0009] In a possible implementation of the first aspect of the present application, the parameters corresponding to the multiple transmission modes also include at least one of the burst number of the synchronization signal block or the downlink transmission power of the synchronization signal block, and the burst number of the synchronization signal block and the burst number of the synchronization signal block corresponding to each transmission mode are different; the burst number of the synchronization signal block corresponding to the first transmission mode is greater than the burst number of the synchronization signal block corresponding to the second transmission mode, the burst number of the synchronization signal block corresponding to the second transmission mode is greater than the burst number of the synchronization signal block corresponding to the third transmission mode, and the burst number of the synchronization signal block corresponding to the third transmission mode is greater than the burst number of the synchronization signal block corresponding to the fourth transmission mode; the downlink transmission power of the synchronization signal block corresponding to the first transmission mode is greater than the downlink transmission power of the synchronization signal block corresponding to the second transmission mode, the downlink transmission power of the synchronization signal block corresponding to the second transmission mode is greater than the downlink transmission power of the synchronization signal block corresponding to the third transmission mode, and the downlink transmission power of the synchronization signal block corresponding to the third transmission mode is greater than the downlink transmission power of the synchronization signal block corresponding to the fourth transmission mode. In the above implementation scheme, in addition to configuring the corresponding synchronization signal block period for different transmission modes, at least one of the corresponding synchronization signal block burst number or the synchronization signal block downlink power can also be configured for different transmission modes, so that the network device can not only dynamically adjust the sending period of the synchronization signal block according to the needs of the synchronization signal block, but also dynamically adjust the sending burst number and downlink power of the synchronization signal block according to the needs of the synchronization signal block. Compared with the existing technology of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0010] In a possible implementation of the first aspect of the present application, the first indication information is indicated by a first preamble, and the first preamble is determined based on the first indication information. In the above implementation scheme, after determining the first indication information for indicating the target transmission mode, the terminal device can further determine the first preamble based on the first indication information, and finally send the first preamble determined based on the first indication information to the network device, so that the network device can determine the first indication information for indicating the target transmission mode based on the first preamble, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of broadcasting the synchronization signal block with fixed parameters, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0011] In a possible implementation of the first aspect of the present application, the first preamble is determined based on at least one of a mode phase offset, a root index, or a cyclic shift step, and at least one of the mode phase offset, the root index, or the cyclic shift step is determined based on the first indication information. In the above implementation scheme, the generation formula of the first preamble may include at least one of the mode phase offset, the root index, or the cyclic shift step. After determining the first indication information for indicating the target transmission mode, the terminal device may construct at least one of the mode phase offset, the root index, or the cyclic shift step based on the first indication information, and then further determine the first preamble based on at least one of the mode phase offset, the root index, or the cyclic shift step, so that the generated first preamble can accurately indicate the first indication information, and avoid the network device from misdetecting the first preamble after receiving the first preamble as much as possible, that is, the network device can accurately determine the target transmission mode requested by the terminal device based on the first preamble.

[0012] In a possible implementation of the first aspect of the present application, the target transmission mode is determined based on one or more candidate transmission modes, and the one or more candidate transmission modes include at least one of a first candidate transmission mode, a second candidate transmission mode, a third candidate transmission mode, a fourth candidate transmission mode, or a fifth candidate transmission mode; the first candidate transmission mode is determined based on the Doppler frequency shift of a reference signal, the second candidate transmission mode is determined based on at least one of a reference signal received power or a reference signal received quality, the third candidate transmission mode is determined based on a neighboring cell interference intensity value, the fourth candidate transmission mode is determined based on a data transmission rate, and the fifth candidate transmission mode is determined based on a quality of service mark, and the first candidate transmission mode, the second candidate transmission mode, the third candidate transmission mode, the fourth candidate transmission mode, and the fifth candidate transmission mode respectively include any one of the first transmission mode, the second transmission mode, the third transmission mode, or the fourth transmission mode. In the above implementation scheme, when determining the target transmission mode of the synchronization signal block, the terminal device can first determine the candidate transmission modes corresponding to different conditions from the first transmission mode, the second transmission mode, the third transmission mode or the fourth transmission mode based on different conditions. For example, the terminal device can determine the first candidate transmission mode based on the monitored Doppler frequency shift of the reference signal, determine the second candidate transmission mode based on at least one of the monitored reference signal reception power or the reference signal reception quality, determine the third candidate transmission mode based on the monitored neighboring cell interference strength value, determine the fourth candidate transmission mode based on the monitored data transmission rate, and determine the fifth candidate transmission mode based on the monitored service quality mark. Then, the target transmission mode is further determined based on one or more candidate transmission modes, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode. That is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of broadcasting the synchronization signal block with fixed parameters, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0013] In a possible implementation of the first aspect of the present application, when a target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and the priority corresponding to each of the multiple candidate transmission modes; or, the target transmission mode is determined based on the multiple candidate transmission modes and the weight value corresponding to each of the multiple candidate transmission modes. In the above implementation, a corresponding priority or weight value can be set in advance for each candidate transmission mode determined based on different conditions, so that after determining the multiple candidate transmission modes, the target transmission mode can be further determined from the multiple candidate transmission modes based on the priority or weight value corresponding to each of the multiple candidate transmission modes, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode. That is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of broadcasting the synchronization signal block using fixed parameters, it can flexibly adapt to the needs of the network under different load conditions, thereby improving network resource utilization or improving network connection stability.

[0014] In a possible implementation of the first aspect of the present application, before sending the first indication information, the method also includes: receiving first configuration information, the first configuration information being used to configure multiple transmission modes of the synchronization signal block or at least one of the parameters or preamble code sets corresponding to the multiple transmission modes; the parameters corresponding to the multiple transmission modes include the period of the synchronization signal block, the number of bursts of the synchronization signal block, or the downlink transmission power of the synchronization signal block; the preamble code set includes a second preamble code, the second preamble code is used to indicate the first mode index, and the first mode index is used to indicate multiple transmission modes. In the above implementation scheme, the network device can pre-configure multiple transmission modes of the synchronization signal block, the parameters corresponding to each transmission mode, or a preamble code set including a second preamble code to the terminal device, so that the terminal device can determine the transmission modes that the network device can implement, the parameters corresponding to each transmission mode, and the second preamble code corresponding to each transmission mode, so that the terminal device can determine the target transmission mode of the synchronization signal block according to its own needs and the parameters corresponding to each transmission mode, and inform the network device based on the preamble code corresponding to the target transmission mode, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the existing technology of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0015] In a possible implementation of the first aspect of the present application, the parameters corresponding to the multiple transmission modes also include at least one of the subcarrier spacing of the synchronization signal block, the physical cell identification information of the synchronization signal block, the identification information of the target cell, or the maximum duration of the transmission window, and the target cell is the cell corresponding to the terminal device. In the above implementation scheme, the parameters corresponding to the transmission mode configured by the network device based on the first configuration information may also include at least one of the subcarrier spacing of the synchronization signal block, the physical cell identification information of the synchronization signal block, the identification information of the target cell, or the maximum duration of the transmission window, so that after the terminal device determines the target transmission mode of the synchronization signal block, it can accurately receive the synchronization signal block sent by the network device based on the parameters corresponding to the target transmission mode, thereby improving network resource utilization or improving network connection stability.

[0016] In a possible implementation of the first aspect of the present application, before receiving the synchronization signal block, the method further includes: receiving a first message, the first message being used to indicate activation of the target transmission mode, the first message including at least one of first indication information, identification information of the target cell, or second indication information, the second indication information being used to indicate the beam direction corresponding to the synchronization signal block. In the above implementation scheme, before sending the first indication information and receiving the synchronization signal block, the terminal device may also receive a first message indicating activation of the target transmission mode, so that the terminal device can determine that the network device can transmit the synchronization signal block based on the target transmission mode, and can further prepare for receiving the synchronization signal block based on the target transmission mode based on the identification information of the target cell included in the first indication information or the second indication information indicating the beam direction corresponding to the synchronization signal block, so that the transmission of the synchronization signal block can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0017] In a possible implementation of the first aspect of the present application, before sending the first indication information, the method further includes: sending a first request message, the first request message being used to request a first resource, the first indication information being sent based on the first resource; and receiving third indication information, the third indication information being used to indicate the first resource. In the above implementation, before sending the first indication information, the terminal device may also first send a first request message to the network device to request the first resource required for sending the first indication information, so that after receiving the third indication information indicating the first resource, the terminal device may request the network device for a target transmission mode of a synchronization signal block through the first indication information, that is, the terminal device may inform the network device of its demand for the synchronization signal block through the first indication information, so that the network device may transmit the synchronization signal block based on parameters corresponding to the target transmission mode, for example, the synchronization signal block may be transmitted based on a period corresponding to the target transmission mode, that is, the network device may dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of broadcasting synchronization signal blocks using fixed parameters, this method can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0018] The second aspect of the present application provides a method that can be applied to a network device, for example, the network device can be a communication device, or the network device can be a partial component in the communication device (such as a processor or circuit or chip or chip system responsible for the communication function), or the network device can also be a logic module or software that can realize all or part of the functions of the communication device. The following is an example of a network device for explanation. In this method, the network device receives first indication information, and the first indication information is used to indicate a target transmission mode of a synchronization signal block, the target transmission mode is any one of multiple transmission modes, and the parameters corresponding to the multiple transmission modes include the period of the synchronization signal block, and the period of the synchronization signal block corresponding to each transmission mode is different; the network device sends a synchronization signal block, and the synchronization signal block is sent based on the target transmission mode.

[0019] In the above implementation scheme, the terminal device can request the target transmission mode of the synchronization signal block from the network device through the first indication information, that is, the terminal device can inform the network device of the terminal device's demand for the synchronization signal block through the first indication information, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0020] In a possible implementation of the second aspect of the present application, the multiple transmission modes include at least one of a first transmission mode, a second transmission mode, a third transmission mode or a fourth transmission mode, the period of the synchronization signal block corresponding to the first transmission mode is smaller than the period of the synchronization signal block corresponding to the second transmission mode, the period of the synchronization signal block corresponding to the second transmission mode is smaller than the period of the synchronization signal block corresponding to the third transmission mode, and the period of the synchronization signal block corresponding to the third transmission mode is smaller than the period of the synchronization signal block corresponding to the fourth transmission mode.

[0021] In a possible implementation of the second aspect of the present application, the parameters corresponding to the multiple transmission modes also include at least one of the burst number of the synchronization signal block or the downlink transmission power of the synchronization signal block.

[0022] In a possible implementation manner of the second aspect of the present application, the first indication information is indicated by a first preamble code, and the first preamble code is determined based on the first indication information.

[0023] In a possible implementation of the second aspect of the present application, the first preamble code is determined based on at least one of a pattern phase offset, a root index, or a cyclic shift step, and at least one of the pattern phase offset, the root index, or the cyclic shift step is determined based on the first indication information.

[0024] In a possible implementation of the second aspect of the present application, the target transmission mode is determined based on one or more candidate transmission modes, and the one or more candidate transmission modes include at least one of a first candidate transmission mode, a second candidate transmission mode, a third candidate transmission mode, a fourth candidate transmission mode, or a fifth candidate transmission mode; the first candidate transmission mode is determined based on the Doppler frequency shift of a reference signal, the second candidate transmission mode is determined based on at least one of a reference signal received power or a reference signal received quality, the third candidate transmission mode is determined based on a neighboring cell interference intensity value, the fourth candidate transmission mode is determined based on a data transmission rate, and the fifth candidate transmission mode is determined based on a quality of service mark, and the first candidate transmission mode, the second candidate transmission mode, the third candidate transmission mode, the fourth candidate transmission mode, and the fifth candidate transmission mode respectively include any one of the first transmission mode, the second transmission mode, the third transmission mode, or the fourth transmission mode.

[0025] In a possible implementation of the second aspect of the present application, when the target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and the priority corresponding to each of the multiple candidate transmission modes; or, the target transmission mode is determined based on the multiple candidate transmission modes and the weight value corresponding to each of the multiple candidate transmission modes.

[0026] In a possible implementation of the second aspect of the present application, before receiving the first indication information, the method also includes: sending first configuration information, wherein the first configuration information is used to configure the multiple transmission modes of the synchronization signal block or at least one of the parameters or preamble code sets corresponding to the multiple transmission modes; the parameters corresponding to the multiple transmission modes include the period of the synchronization signal block, the number of bursts of the synchronization signal block, or the downlink transmission power of the synchronization signal block; the preamble code set includes a second preamble code, the second preamble code is used to indicate the first mode index, the second preamble code is determined based on the first mode index, and the first mode index is used to indicate the multiple transmission modes.

[0027] In a possible implementation of the second aspect of the present application, the parameters corresponding to the multiple transmission modes also include at least one of the subcarrier spacing of the synchronization signal block, the physical cell identification information of the synchronization signal block, the identification information of the target cell, or the maximum duration of the transmission window, and the target cell is the cell corresponding to the terminal device.

[0028] In a possible implementation of the second aspect of the present application, before sending the synchronization signal block, the method also includes: sending a first message, the first message is used to indicate that the target transmission mode is activated, the first message includes at least one of the first indication information, the identification information of the target cell or the second indication information, and the second indication information is used to indicate the beam direction corresponding to the synchronization signal block.

[0029] In a possible implementation of the second aspect of the present application, before receiving the first indication information, the method also includes: receiving a first request message, the first request message is used to request a first resource, and the first indication information is sent based on the first resource; sending third indication information, and the third indication information is used to indicate the first resource.

[0030] A third aspect provides a communication device, comprising a processor. The processor is coupled to a memory and can be configured to execute instructions or data in the memory to implement the method of any possible implementation of any of the above aspects. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

[0031] In one implementation, the communication interface may be a transceiver, or an input / output interface.

[0032] In another implementation, the communication device is a chip configured in a terminal device. When the communication device is a chip configured in a terminal device, the communication interface may be an input / output interface.

[0033] In a fourth aspect, a communication device is provided, comprising a processor. The processor is coupled to a memory and can be configured to execute instructions or data in the memory to implement the method of any possible implementation of any of the above aspects. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

[0034] In one implementation, the communication interface may be a transceiver, or an input / output interface.

[0035] In another implementation, the communication device is a chip configured in a satellite. When the communication device is a chip configured in a satellite, the communication interface may be an input / output interface.

[0036] In a fifth aspect, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation of any aspect.

[0037] In a specific implementation, the processor may be one or more chips, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a trigger, or various logic circuits. The input signal received by the input circuit may be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter. The input circuit and the output circuit may be the same circuit, which functions as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation of the processor and various circuits.

[0038] In a sixth aspect, a communication device is provided, comprising a processor and a memory. The processor is configured to read instructions stored in the memory and receive signals via a receiver and transmit signals via a transmitter to execute the method of any possible implementation of any of the above aspects.

[0039] Optionally, there are one or more processors and one or more memories.

[0040] In a seventh aspect, a computer program product is provided, comprising: a computer program (also referred to as code, or instructions), which, when executed, enables a computer to execute a method in any possible implementation of any of the above aspects.

[0041] In an eighth aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code, or instructions) which, when run on a computer, enables the computer to execute a method in any possible implementation of any of the above aspects.

[0042] In a ninth aspect, embodiments of the present application provide a chip system, comprising one or more processors configured to retrieve and execute instructions stored in a memory, thereby executing the method of each of the above aspects or the first possible implementation of each aspect. The chip system may be composed of a chip or may include a chip and other discrete devices.

[0043] Among them, the chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

[0044] In a tenth aspect, a communication system is provided, comprising the aforementioned terminal device and network equipment (including access network equipment and core network equipment). Optionally, the communication system may further comprise other equipment for communicating with the terminal device and / or the network equipment.

[0045] In an eleventh aspect, a communication device is provided, which includes a transceiver module and a processing module, and is used to execute the method in any possible implementation of any of the above aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A schematic diagram of the system architecture of the communication system provided in an embodiment of the present application;

[0047] Figure 2 A flow chart of a communication method provided in an embodiment of the present application;

[0048] Figure 3 A flowchart of another communication method provided in an embodiment of the present application;

[0049] Figure 4 A flowchart of another communication method provided in an embodiment of the present application;

[0050] Figure 5 A schematic structural diagram of a communication device is provided for an embodiment of the present application;

[0051] Figure 6 This is a structural example diagram of an electronic device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of associated objects, indicating that three relationships may exist; for example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0053] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0054] The "multiple" involved in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the words "first" and "second" are only used for the purpose of distinguishing the description and cannot be understood as indicating or implying relative importance or order.

[0055] The embodiments of the present application are applied to a communication system, which may be a second-generation (2G) communication system, a third-generation (3G) communication system, an LTE system, a fifth-generation (5G) communication system, an LTE and 5G hybrid architecture, a 5G new radio (5G NR) system, and new communication systems that will emerge in future communication developments.

[0056] The communication system includes a first device and a second device. The first device can be a device on the network side for providing network communication functions, which is sometimes also called a network device or a network element. The network device can generally be a base station (including a functional unit of a base station, or a combination of functional units of a base station) or a core network unit, wherein the core network unit can be a functional unit in the core network, including but not limited to an Access and Mobility Management Function (AMF) unit or a Session Management Function (SMF) unit. The second device can be a device for accessing the network, which can generally be a terminal device. An example of a communication system is as follows: Figure 1 As shown, Figure 1 It includes a base station 11 and a terminal 12.

[0057] In the embodiments provided in the present application, the base station can be any device with wireless transceiver functions, including but not limited to: an evolved base station (nodeB or eNB or e-nodeB, evolutionary Node B) in long term evolution (LTE), a base station (gNodeB or gNB) or a transmission receiving point (transmission reception point / transmission reception point, TRP) in new radio (NR), a base station of subsequent evolution of 3GPP, an access node in a Wi-Fi system, a wireless relay node, a wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. The base station can include one or more co-site or non-co-site transmission points (transmission reception point, TRP). The base station can also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The base station can communicate with a terminal device, or communicate with the terminal device through a relay station. The terminal device can communicate with multiple base stations of different technologies. For example, the terminal device can communicate with a base station that supports the LTE network, and can also communicate with a base station that supports the 5G network. It can also establish dual connections with a base station that supports the LTE network and a base station that supports the 5G network.

[0058] In the embodiments provided herein, the terminal device may be in various forms, such as a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a vehicle-mounted terminal device, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, a wearable terminal device, etc. The terminal device may also be sometimes referred to as a terminal device, user equipment (UE), an access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent, or a UE device, etc. The terminal device may also be a fixed terminal device or a mobile terminal device.

[0059] The Synchronization Signal Block (SSB) is a key signal block in the 5G NR system used for cell search, synchronization, and system information broadcasting. The SSB consists of a Synchronization Signal (SS) and a Physical Broadcast Channel (PBCH). Specifically, the SSB includes the Primary Synchronization Signal (PSS), the Secondary Synchronization Signal (SSS), and the Physical Broadcast Channel (PBCH). The PSS is used for time domain synchronization and partial cell identifier acquisition; the SSS and PSS together determine the complete cell identifier; and the PBCH is used to transmit the Master Information Block (MIB) within the System Information Block (SIB), which contains basic system configuration information. The SSB is widely used for cell search and synchronization, system information broadcasting, and beam management in terminal devices. Furthermore, the SSB serves as the basic synchronization and broadcast signal for the cell, providing independent synchronization and system information for each aggregated carrier in carrier aggregation. Carrier Aggregation (CA) is a technical process that combines multiple discrete spectrum carriers (CCs) into a wider logical channel to improve data transmission rate and system capacity.

[0060] With the rapid development of communication technology, communication network architectures are gradually evolving towards higher density and greater complexity. Network energy consumption and synchronization signal transmission efficiency have become significant constraints on this development. In the new air interface system defined by the 3rd Generation Partnership Project (3GPP), the synchronization signal block (SSB) serves as the core signaling for terminal devices to implement cell search, time synchronization, frequency synchronization, and cell selection. Its transmission mechanism directly impacts network energy efficiency and connection performance.

[0061] However, currently, synchronization signal blocks are usually broadcast using fixed parameters. For example, traditional synchronization signal blocks use a fixed-period broadcast mechanism, that is, regardless of the network load, service type differences, or terminal mobility status, network equipment sends synchronization signal blocks at a preset fixed period. This "one-size-fits-all" transmission method has exposed significant drawbacks in large-scale dense networking scenarios. Specifically, when the network is in a low-load state, there is a problem of redundant transmission when sending synchronization signal blocks at a preset fixed period, which easily leads to high power consumption of base stations. In high-mobility or low-latency service scenarios, sending synchronization signal blocks at a fixed period is difficult to adapt to the rapid changes in the channel, or it is difficult to adapt to the strict synchronization accuracy requirements, which easily leads to synchronization delays, switching failures and other problems. In addition, the activation of the secondary cell (SCell) relies on the synchronization signal block for synchronization. The transmission mechanism of the synchronization signal block with a fixed period prolongs the carrier aggregation process and affects the real-time response capability of the network.

[0062] The core flaw of the traditional transmission mechanism that transmits synchronization signal blocks at a fixed period lies in the profound conflict between "fixed periodicity" and "scenario dynamics." First, there is an imbalance between energy efficiency and resource utilization. Redundant signal overhead occurs when the network is underloaded, resulting in inefficient energy consumption. In bursty traffic or high-mobility scenarios, synchronization resources are insufficient, making it difficult to balance synchronization reliability and transmission efficiency. Second, synchronization performance is out of sync with dynamic requirements. A fixed periodicity is difficult to adapt to scenarios like bursty traffic and high-speed mobility, leading to increased secondary cell activation delays and handover failure rates. Furthermore, the secondary cell activation process is constrained by the fixed periodicity of synchronization signal blocks, making it unable to meet the fast carrier aggregation requirements of real-time services. Finally, the ability to dynamically adapt parameters is lacking. Existing semi-static configuration mechanisms lack the ability to coordinate network-side resource status with real-time terminal requirements. They are unable to dynamically optimize the parameters used in transmitting synchronization signal blocks based on factors such as service quality and interference fluctuations. This results in reduced synchronization reliability and excessive network energy consumption, creating a systemic conflict between energy conservation and service quality.

[0063] In summary, the use of synchronization signal blocks broadcast with fixed parameters may result in the inability to flexibly adapt to the needs of the network under different load conditions, thereby resulting in low network resource utilization or poor network connection stability.

[0064] In order to make the technical solution of the present application clearer and easier to understand, a communication method of an embodiment of the present application is introduced below in conjunction with the accompanying drawings. The embodiment of the present application is applicable to the data transmission process in a wireless communication scenario. A communication method provided in an embodiment of the present application can be applied to a terminal device or a network device. For example, the terminal device can be a communication device, or the terminal device can be a partial component in a communication device (such as a processor or circuit or chip or chip system responsible for the communication function), or the terminal device can also be a logic module or software that can implement all or part of the functions of the communication device. The network device can be a communication device, or the network device can be a partial component in a communication device (such as a processor or circuit or chip or chip system responsible for the communication function), or the network device can also be a logic module or software that can implement all or part of the functions of the communication device. The following description is taken as an example of a terminal device or a network device.

[0065] See also Figure 2 , Figure 2 The figure is a flow chart of a communication method provided in an embodiment of the present application. The communication method provided in an embodiment of the present application mainly includes the following steps:

[0066] 201. The terminal device sends first indication information, and correspondingly, the network device receives the first indication information.

[0067] Among them, the first indication information is used to indicate the target transmission mode of the synchronization signal block, the target transmission mode includes any one of a plurality of transmission modes, the parameters corresponding to the plurality of transmission modes include the period of the synchronization signal block, and the period of the synchronization signal block corresponding to each transmission mode is different.

[0068] In an embodiment of the present application, multiple transmission modes of the synchronization signal block can be determined based on the value range of the parameters used when transmitting the synchronization signal block. For example, a first transmission mode, a second transmission mode, a third transmission mode, and a fourth transmission mode can be determined, and the parameters corresponding to each transmission mode are different, that is, when different transmission modes are used to transmit the synchronization signal block, the parameters used can be different. Specifically, the parameters corresponding to the transmission mode can include a period, that is, the transmission period of the synchronization signal block, and the period corresponding to the first transmission mode can be smaller than the period corresponding to the second transmission mode, the period corresponding to the second transmission mode can be smaller than the period corresponding to the third transmission mode, and the period corresponding to the third transmission mode can be smaller than the period corresponding to the fourth transmission mode. When the first transmission mode is used to transmit the synchronization signal block, the network device can send the synchronization signal block more frequently, so that the terminal device can obtain synchronization information more quickly, shorten the synchronization time of the terminal device, and improve the reliability of the synchronization signal in a complex environment, so that the terminal device can achieve fast access and stable connection, effectively cope with the synchronization challenges in high-dynamic scenarios, and improve the network connection stability of the terminal device. When using the fourth transmission mode to transmit synchronization signal blocks, network devices can minimize the transmission of synchronization signal blocks to minimize network energy consumption, reduce unnecessary resource consumption, and thus improve resource utilization. The transmission period of a synchronization signal block refers to the time interval between repeated transmissions of the synchronization signal block in the time domain.

[0069] For example, since the synchronization signal block corresponding to the first transmission mode has the lowest transmission period, the first transmission mode can be called an emergency transmission mode. It can be applied to low-latency service scenarios, such as autonomous driving, remote medical surgery, and other services that are extremely sensitive to latency. It can also be applied to high-speed mobility scenarios, such as user equipment in vehicles on high-speed trains and highways, and can also be applied to high-load, dense access scenarios. In these scenarios, the high-speed mobility of terminal devices may cause rapid channel fading, requiring frequent updates of channel state information to support beam tracking and switching. Low-latency services and high loads require high-frequency synchronization signal updates to avoid service interruptions. Therefore, the traditional synchronization signal blocks sent at a fixed period cannot meet the rapid channel fading caused by high-speed mobility, the strict synchronization signal alignment requirements of low-latency services, and the dense synchronization requirements under high loads. The first transmission mode can adjust the transmission parameters of the synchronization signal blocks by significantly shortening the transmission period of the synchronization signal blocks, increasing the number of synchronization signal block bursts, or increasing the transmission power of the synchronization signal blocks. This ensures the real-time performance of low-latency services while coping with the rapid channel changes caused by high-speed mobility. The advantage of the first transmission mode is that it can significantly shorten the synchronization time of the terminal device. By sending synchronization signal blocks more frequently, the terminal device can obtain synchronization information faster, reducing the time required for synchronization. It can also improve the reliability of the synchronization signal blocks in complex environments, and ensure the connection stability in high-speed or weak coverage areas by enhancing coverage capabilities, thereby ensuring fast access and stable connection of terminal devices, and effectively responding to synchronization challenges in high-dynamic scenarios.

[0070] Because the second transmission mode corresponds to a lower transmission period for synchronization signal blocks, it can be called the normal transmission mode. It is suitable for everyday business scenarios, such as web browsing and social media use. It is also suitable for scenarios with moderate network loads, such as those with normal physical resource block (PRB) utilization, moderate terminal density, and no high-volume bursty traffic or high-speed mobile users, which do not require extremely high or low-frequency synchronization signal transmission. The second transmission mode balances energy consumption and synchronization efficiency while ensuring service quality. The traditional method of transmitting synchronization signal blocks at a fixed period can waste resources under moderate loads, while the high energy consumption of the first transmission mode makes it unsuitable for everyday scenarios. The second transmission mode optimizes the parameters of the synchronization signal blocks to achieve "on-demand synchronization" for regular business needs. In other words, the second transmission mode is designed to meet the synchronization needs of regular business while avoiding the high energy consumption and resource waste of the first transmission mode. By balancing synchronization signal transmission efficiency and energy consumption, the second transmission mode meets the needs of most scenarios. It also supports dynamic adjustment of configuration parameters to optimize resource utilization while ensuring service quality, adapting to the service quality requirements of different scenarios.

[0071] Since the transmission period of the third transmission mode is relatively high, the third transmission mode can be called an energy-saving transmission mode, which can be applied to low-load network scenarios, such as late-night low-traffic periods, and can also be applied to scenarios where most users are inactive. It can also be applied to non-emergency services or low-priority services, such as downloading files, background data synchronization, and other services. In these scenarios, the traditional method of sending synchronization signal blocks at a fixed period continues to transmit at a fixed period under low load, resulting in significant energy waste. The third transmission mode can achieve energy saving without affecting non-emergency services by reducing parameters such as the transmission frequency and power of the synchronization signal blocks. The main purpose of the third transmission mode is to significantly reduce the energy consumption of base stations and other network equipment while ensuring basic services, thereby achieving the purpose of energy saving. That is, the advantage of the third transmission mode is that it can effectively reduce the power consumption of network equipment, reduce operating costs, and achieve network energy saving. In addition, while saving energy, the third transmission mode can also ensure the basic synchronization requirements of non-emergency services and ensure business continuity.

[0072] Since the fourth transmission mode has the highest transmission period, the fourth transmission mode can be called the sleep transmission mode, which can be applied to extremely low-load scenarios, such as base stations in remote areas, where the number of users is extremely small, and can also be applied to equipment maintenance or standby scenarios. The purpose of the fourth transmission mode is to minimize the transmission of synchronization signals when there is almost no business demand, reduce energy consumption to a minimum, and achieve deep energy saving. At the same time, it can support fast wake-up to cope with sudden business demands. The advantage of the fourth transmission mode is that it minimizes network energy consumption and reduces unnecessary resource consumption by minimizing the transmission of synchronization signal blocks. That is, the fourth transmission mode can achieve deep energy saving with almost no impact on business, and support fast wake-up to cope with sudden load changes. When a sudden business is triggered, the terminal device can activate other transmission modes in a short time to achieve both extreme energy saving and emergency response capabilities.

[0073] It can be understood that the terminal device can self-trigger the sending of the first indication information by real-time monitoring of its own status, business needs and other conditions or related parameters, that is, the terminal device can determine the current demand for the synchronization signal block based on the monitored own status, business needs and other conditions or related parameters, and then determine the target transmission mode of the synchronization signal block from one or more transmission modes based on the current demand for the synchronization signal block, and the terminal device can request the target transmission mode of the synchronization signal block from the network device through the first indication information, that is, the terminal device can inform the network device of the terminal device's demand for the synchronization signal block through the first indication information, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, so that the terminal device can receive the appropriate synchronization signal block based on its own demand for the synchronization signal block to complete the synchronization of the terminal device. Compared with the prior art of broadcasting the synchronization signal block with fixed parameters, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0074] In addition, it should be noted that the first indication information can also be called the mode index of the target transmission mode. For example, if the target transmission mode indicated by the first indication information is the first transmission mode, the first indication information can be 11; if the target transmission mode indicated by the first indication information is the second transmission mode, the first indication information can be 10; if the target transmission mode indicated by the first indication information is the third transmission mode, the first indication information can be 01; if the target transmission mode indicated by the first indication information is the fourth transmission mode, the first indication information can be 00. In order to distinguish the synchronization signal blocks, the traditional synchronization signal block sent based on a fixed period can be called a traditional synchronization signal block (always-onSSB, AO-SSB), and the synchronization signal block sent based on the target transmission mode can be called an on-demand synchronization signal block (on-demand SSB, OD-SSB).

[0075] In one possible implementation of an embodiment of the present application, the parameters corresponding to multiple transmission modes also include at least one of the burst number of the synchronization signal block or the downlink transmission power of the synchronization signal block, and the burst number of the synchronization signal block and the burst number of the synchronization signal block corresponding to each transmission mode are different.

[0076] Among them, the number of bursts corresponding to the first transmission mode is greater than the number of bursts corresponding to the second transmission mode, the number of bursts corresponding to the second transmission mode is greater than the number of bursts corresponding to the third transmission mode, and the number of bursts corresponding to the third transmission mode is greater than the number of bursts corresponding to the fourth transmission mode; the downlink transmission power corresponding to the first transmission mode is greater than the downlink transmission power corresponding to the second transmission mode, the downlink transmission power corresponding to the second transmission mode is greater than the downlink transmission power corresponding to the third transmission mode, and the downlink transmission power corresponding to the third transmission mode is greater than the downlink transmission power corresponding to the fourth transmission mode.

[0077] In an embodiment of the present application, the multiple transmission modes of the determined synchronization signal blocks can be different not only in the period of the synchronization signal blocks, but also in the number of bursts of the synchronization signal blocks and / or the downlink transmission power of the synchronization signal blocks. That is, in addition to configuring the corresponding period of the synchronization signal blocks for different transmission modes, at least one of the number of bursts of the corresponding synchronization signal blocks or the downlink power of the synchronization signal blocks can also be configured for different transmission modes. This allows the network device to dynamically adjust not only the sending period of the synchronization signal blocks according to the needs of the synchronization signal blocks, but also the number of bursts and downlink power of the synchronization signal blocks according to the needs of the synchronization signal blocks. Compared with the prior art of broadcasting synchronization signal blocks with fixed parameters, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0078] It can be understood that since the first transmission mode has the shortest period, the first transmission mode can be applied to scenarios where the network needs to send synchronization signal blocks very frequently, such as low-latency business scenarios, so the number of bursts of synchronization signal blocks and the downlink transmission power of synchronization signal blocks corresponding to the first transmission mode can also be the largest; since the second transmission mode has a shorter period, the first transmission mode can be applied to scenarios where the network needs to send synchronization signal blocks more frequently, such as daily business scenarios, so the number of bursts of synchronization signal blocks and the downlink transmission power of synchronization signal blocks corresponding to the second transmission mode can also be larger; since the third transmission mode has a longer period, the third transmission mode can be applied to scenarios where synchronization signal blocks are not much needed, such as low-load network scenarios, so the number of bursts of synchronization signal blocks and the downlink transmission power of synchronization signal blocks corresponding to the third transmission mode can also be smaller; since the fourth transmission mode can be applied to scenarios where synchronization signal blocks are least needed, such as extremely low-load scenarios, the number of bursts of synchronization signal blocks and the downlink transmission power of synchronization signal blocks corresponding to the fourth transmission mode can also be the smallest, so that the synchronization signal blocks received by the terminal device can better meet the needs of the terminal device.

[0079] For example, the parameters corresponding to different transmission modes may be as shown in Table 1.

[0080] Table 1

[0081]

[0082] In addition, it should be noted that other parameters in Table 1 may include parameters such as the location information of the synchronization signal block, the system frame number (SFN), and the half-frame index.

[0083] The specific type and number of transmission modes can be set according to actual conditions. In some cases, the number of bursts, downlink transmission power and other parameters corresponding to different transmission modes may be the same or different. This embodiment of the present application does not limit this.

[0084] In a possible implementation of the embodiment of the present application, the first indication information is indicated by a first preamble code, and the first preamble code is determined based on the first indication information.

[0085] In an embodiment of the present application, after determining the first indication information for indicating the target transmission mode, the terminal device may further determine a first preamble based on the first indication information. It is understandable that the first preamble determined based on the first indication information may be considered to have a mapping relationship with the first indication information, that is, the first preamble may be used to indicate the first indication information, that is, the first preamble may be used to implicitly indicate the first indication information for indicating the target transmission mode, so that the terminal device may send the first preamble determined based on the first indication information to the network device, so that the network device may determine the first indication information for indicating the target transmission mode based on the first preamble, so that the network device may transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block may be transmitted based on the period corresponding to the target transmission mode, that is, the network device may dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of broadcasting the synchronization signal block using fixed parameters, the network device may flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0086] It should be noted that the preamble is a specific bit sequence at the beginning of a data frame or signal. Its core function is to provide the receiving end with the necessary synchronization and channel estimation information to ensure that the data can be correctly parsed and processed.

[0087] In one possible implementation of an embodiment of the present application, the first preamble code is determined based on at least one of a pattern phase offset, a root index, or a cyclic shift step, and at least one of the pattern phase offset, a root index, or a cyclic shift step is determined based on the first indication information.

[0088] In an embodiment of the present application, the generation formula of the first preamble may include at least one of a mode phase offset, a root index, or a cyclic shift step. After determining the first indication information for indicating the target transmission mode, the terminal device may construct at least one of a mode phase offset, a root index, or a cyclic shift step based on the first indication information, and then further determine the first preamble based on at least one of the mode phase offset, the root index, or the cyclic shift step, so that the generated first preamble can accurately indicate the first indication information, and avoid as much as possible the network device from misdetecting the first preamble after receiving the first preamble, that is, the network device can accurately determine the target transmission mode requested by the terminal device based on the first preamble.

[0089] Exemplarily, the first preamble may be determined based on the Zadoff-Chu sequence and the first indication information. The generation formula of the first preamble may be as follows:

[0090] ;

[0091] in, can be a Zadoff-Chu sequence, is the mode phase offset, is the cyclic shift offset, is the sequence length. The Zadoff-Chu sequence can be shown as follows:

[0092] ;

[0093] in, is the sequence length, which can be 839, 139, 1151 or 571; u is the root index, which ranges from (0, ) in integers.

[0094] in, The value of can be obtained by OK, and The values ​​of can be shown in Table 2 below.

[0095] Table 2

[0096]

[0097] Among them, the cyclic shift step size The decisive parameter The index of the corresponding zero correlation zone configuration may be set to be determined by the cell identifier of the cell corresponding to the terminal device and the first indication information, and the specific formula may be as follows:

[0098] ;

[0099] in, The index of the zero correlation zone configuration, is the cell identifier, used to distinguish different cells. This is the first indication information.

[0100] It can be understood that the value of the mode phase offset can be determined based on the first indication information, for example, as shown in Table 3 below.

[0101] Table 3

[0102]

[0103] Similarly, since different root indexes generate different Zadoff-Chu sequences, the root index u may be set to be determined by the cell identifier and the first indication information, as shown below:

[0104]

[0105] in, is the cell identifier, used to distinguish different cells. is the first indication information, is the sequence length.

[0106] It can be understood that at least one of the mode phase offset, root index or cyclic shift step is constructed based on the first indication information, and then the first preamble code is further determined based on at least one of the mode phase offset, root index or cyclic shift step, so that the generated first preamble code can accurately indicate the first indication information, and avoid the network device from misdetecting the first preamble code after receiving the first preamble code as much as possible, that is, the network device can accurately determine the target transmission mode requested by the terminal device based on the first preamble code.

[0107] In one possible implementation of an embodiment of the present application, the target transmission mode is determined based on one or more candidate transmission modes, and the one or more candidate transmission modes include at least one of a first candidate transmission mode, a second candidate transmission mode, a third candidate transmission mode, a fourth candidate transmission mode or a fifth candidate transmission mode; the first candidate transmission mode is determined based on the Doppler frequency shift of a reference signal, the second candidate transmission mode is determined based on at least one of a reference signal received power or a reference signal received quality, the third candidate transmission mode is determined based on a neighboring cell interference intensity value, the fourth candidate transmission mode is determined based on a data transmission rate, and the fifth candidate transmission mode is determined based on a quality of service mark, and the first candidate transmission mode, the second candidate transmission mode, the third candidate transmission mode, the fourth candidate transmission mode and the fifth candidate transmission mode respectively include any one of the first transmission mode, the second transmission mode, the third transmission mode or the fourth transmission mode.

[0108] In an embodiment of the present application, the terminal device can compare the monitored conditions, business needs, etc. or related parameters with one or more conditions, and respectively determine the candidate transmission modes that can be adopted under one or more conditions, and then further determine the target transmission mode of the synchronization signal block based on the candidate transmission mode determined under one or more conditions. That is, the terminal device can determine the terminal device's current demand for the synchronization signal block by analyzing the monitored conditions, business needs, etc. or related parameters in multiple dimensions. Specifically, when determining the target transmission mode of the synchronization signal block, the terminal device can first determine the candidate transmission modes corresponding to different conditions from the first transmission mode, the second transmission mode, the third transmission mode or the fourth transmission mode based on different conditions. For example, the terminal device can determine the first candidate transmission mode based on the monitored Doppler frequency shift of the reference signal, determine the second candidate transmission mode based on at least one of the monitored reference signal reception power or the reference signal reception quality, determine the third candidate transmission mode based on the monitored neighboring cell interference strength value, determine the fourth candidate transmission mode based on the monitored data transmission rate, and determine the fifth candidate transmission mode based on the monitored service quality mark. Then, the target transmission mode is further determined based on one or more candidate transmission modes, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode. That is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of broadcasting the synchronization signal block with fixed parameters, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0109] It is understood that the one or more conditions mentioned above may include one or more of mobility conditions, channel quality conditions, signal interference conditions, data traffic demand conditions, and service type conditions. In the mobility condition, the terminal device can receive the reference signal sent by the network device and calculate the Doppler shift based on the change in the signal frequency of the reference signal to determine the terminal device's own mobility scenario. Different synchronization signal block transmission modes can be requested based on the calculated different Doppler shift intervals. In the channel quality condition, the terminal device can continuously monitor the reference signal received power and reference signal received quality to evaluate the current wireless link quality and request different synchronization signal block transmission modes based on different channel quality conditions determined by the reference signal received power and reference signal received quality. In the signal interference condition, the terminal device can determine the interference intensity by monitoring the interference intensity of the neighboring cell. That is, the terminal device can calculate the interference intensity of the neighboring cell by measuring the power strength of the neighboring cell signal and combining it with the signal conditions received by itself, and request different synchronization signal block transmission modes based on different signal interference intensities. In the data traffic demand condition, the terminal device can determine the traffic demand by monitoring the real-time data traffic of the running application. For example, a terminal device can obtain the amount of data sent and received by the application layer, calculate the data transmission rate per unit time, and request different synchronization signal block transmission modes based on different traffic requirements or data transmission rates. In the service type condition, the terminal device can determine the service type by identifying the service's quality of service tag. The service quality tag contains information such as the service's data rate, latency requirements, and reliability. The terminal device can request different synchronization signal block transmission modes based on different service quality tags.

[0110] Specifically, corresponding thresholds can be set for different conditions respectively, so that the candidate transmission mode determined under each condition can be determined based on the comparison between the monitored relevant parameters and the thresholds corresponding to the conditions. For example, under the mobility condition, the threshold corresponding to the mobility condition can be set to include a first threshold, a second threshold and a third threshold. If the Doppler shift detected by the terminal device is less than or equal to the first threshold, it can be determined that the terminal device is moving slowly and the demand for the synchronization signal block is low. At this time, the first candidate transmission mode of the synchronization signal block can be determined to be the fourth transmission mode, so as to minimize resource consumption. If the Doppler shift detected by the terminal device is greater than the first threshold and less than or equal to the second threshold, it can be determined that the terminal device is in a medium mobility state and the demand for the synchronization signal block is moderate. At this time, the first candidate transmission mode of the synchronization signal block can be determined to be the third transmission mode, so as to reduce resource consumption while ensuring the basic synchronization of the terminal device. If the Doppler shift detected by the terminal device is greater than the second threshold and less than or equal to the third threshold, it can be determined that the terminal device is moving at high speed and the time-varying characteristics of the channel are enhanced. At this time, the first candidate transmission mode of the synchronization signal block can be determined to be the second transmission mode, so as to balance the synchronization accuracy and resource overhead. If the Doppler shift detected by the terminal device is greater than the third threshold, the terminal device is in an extremely high-speed mobile state, and the Doppler shift causes the channel to change rapidly, then the first candidate transmission mode of the synchronization signal block can be determined to be the first transmission mode, so as to ensure rapid channel estimation and connection stability by receiving high-frequency synchronization signal blocks. The specific values ​​of the first threshold, the second threshold, and the third threshold can be set according to actual conditions. For example, the first threshold can be 2Hz, the second threshold can be 10Hz, and the third threshold can be 50Hz. This embodiment of the present application does not limit this.

[0111] Similarly, under the channel quality condition, the thresholds corresponding to the channel quality condition can be set to include a fourth threshold, a fifth threshold, and a sixth threshold. If the reference signal received power or the reference signal received quality determined by the terminal device is less than or equal to the fourth threshold, it can be determined that the signal coverage is extremely poor and the demand for the synchronization signal block is extremely high. In this case, the second candidate transmission mode of the synchronization signal block can be determined to be the first transmission mode. If the reference signal received power or the reference signal received quality determined by the terminal device is greater than the fourth threshold and less than or equal to the fifth threshold, it can be determined that the signal coverage is poor and the demand for the synchronization signal block is high. In this case, the second candidate transmission mode of the synchronization signal block can be determined to be the second transmission mode. If the reference signal received power or the reference signal received quality determined by the terminal device is greater than the fifth threshold and less than or equal to the sixth threshold, it can be determined that the signal coverage is good and the demand for the synchronization signal block is low. In this case, the second candidate transmission mode of the synchronization signal block can be determined to be the third transmission mode. If the reference signal received power or the reference signal received quality determined by the terminal device is greater than the sixth threshold, it can be determined that the signal coverage is excellent and the demand for the synchronization signal block is extremely low. In this case, the second candidate transmission mode of the synchronization signal block can be determined to be the fourth transmission mode. Among them, the specific values ​​of the fourth threshold, the fifth threshold and the sixth threshold can be set according to actual conditions, and the embodiments of the present application do not limit this.

[0112] Under the signal interference condition, the thresholds corresponding to the channel quality condition can be set to include the seventh threshold, the eighth threshold and the ninth threshold. If the neighboring cell interference strength value determined by the terminal device is less than or equal to the seventh threshold, it can be determined that the impact of the neighboring cell interference on the signal is extremely low, and the demand for the synchronization signal block is extremely low. At this time, the third candidate transmission mode of the synchronization signal block can be determined to be the fourth transmission mode. If the neighboring cell interference strength value determined by the terminal device is greater than the seventh threshold and less than or equal to the eighth threshold, it can be determined that the impact of the neighboring cell interference on the signal is low, and the demand for the synchronization signal block is low. At this time, the third candidate transmission mode of the synchronization signal block can be determined to be the third transmission mode. If the neighboring cell interference strength value determined by the terminal device is greater than the eighth threshold and less than or equal to the ninth threshold, it can be determined that the impact of the neighboring cell interference on the signal is high, and the demand for the synchronization signal block is high. At this time, the third candidate transmission mode of the synchronization signal block can be determined to be the second transmission mode. If the neighboring cell interference strength value determined by the terminal device is greater than the ninth threshold, it can be determined that the impact of the neighboring cell interference on the signal is extremely high, and the demand for the synchronization signal block is extremely high. At this time, the third candidate transmission mode of the synchronization signal block can be determined to be the first transmission mode. Among them, the specific values ​​of the seventh threshold, the eighth threshold and the ninth threshold can be set according to actual conditions, and the embodiments of the present application do not limit this.

[0113] Under signal interference conditions, the thresholds corresponding to the data traffic demand conditions may be set to include the tenth threshold, the eleventh threshold, and the twelfth threshold. If the data transmission rate determined by the terminal device is less than or equal to the tenth threshold, it may be determined that the terminal device has an extremely low demand for data traffic and an extremely low demand for the synchronization signal block, and at this time, the fourth candidate transmission mode of the synchronization signal block may be determined to be the fourth transmission mode. If the data transmission rate determined by the terminal device is greater than the tenth threshold and less than or equal to the eleventh threshold, it may be determined that the terminal device has a low demand for data traffic and a low demand for the synchronization signal block, and at this time, the fourth candidate transmission mode of the synchronization signal block may be determined to be the third transmission mode. If the data transmission rate determined by the terminal device is greater than the eleventh threshold and less than or equal to the twelfth threshold, it may be determined that the terminal device has a high demand for data traffic and a high demand for the synchronization signal block, and at this time, the fourth candidate transmission mode of the synchronization signal block may be determined to be the second transmission mode. If the data transmission rate determined by the terminal device is greater than the twelfth threshold, it may be determined that the terminal device has an extremely high demand for data traffic and an extremely high demand for the synchronization signal block, and at this time, the fourth candidate transmission mode of the synchronization signal block may be determined to be the first transmission mode. Among them, the specific values ​​of the tenth threshold, the eleventh threshold and the twelfth threshold can be set according to actual conditions, and the embodiments of the present application do not limit this.

[0114] Under the service type condition, the thresholds corresponding to the service type condition can be set to include the thirteenth threshold, the fourteenth threshold and the fifteenth threshold. If the service quality mark determined by the terminal device is less than or equal to the thirteenth threshold, it can be determined that the terminal device has an extremely low demand for network resources and an extremely low demand for synchronization signal blocks, and then the fifth candidate transmission mode of the synchronization signal block can be determined to be the fourth transmission mode. If the service quality mark determined by the terminal device is greater than the thirteenth threshold and less than or equal to the fourteenth threshold, it can be determined that the terminal device has a low demand for network resources and a low demand for synchronization signal blocks, and then the fifth candidate transmission mode of the synchronization signal block can be determined to be the third transmission mode. If the service quality mark determined by the terminal device is greater than the fourteenth threshold and less than or equal to the fifteenth threshold, it can be determined that the terminal device has a high demand for network resources and a high demand for synchronization signal blocks, and then the fifth candidate transmission mode of the synchronization signal block can be determined to be the second transmission mode. If the data transmission rate determined by the terminal device is greater than the twelfth threshold, it can be determined that the terminal device has an extremely high demand for network resources and an extremely high demand for synchronization signal blocks, and then the fifth candidate transmission mode of the synchronization signal block can be determined to be the first transmission mode. Among them, the specific values ​​of the thirteenth threshold, the fourteenth threshold and the fifteenth threshold can be set according to actual conditions, and the embodiments of the present application do not limit this.

[0115] It should be noted that Doppler shift refers to the deviation between the received signal frequency and the transmitted signal frequency due to the relative motion between the transmitter and receiver. Reference Signal Received Power (RSRP) refers to the base station reference signal strength received by a terminal device. It is used to measure wireless signal coverage and is a core metric for cell selection and handover. Reference Signal Received Quality (RSRQ) comprehensively evaluates signal strength and interference levels, reflecting signal quality. Neighboring Cell Interference Strength measures the impact of neighboring cell interference on the signal and directly affects communication reliability. Data rate refers to the amount of data transmitted per unit time and is used to measure the throughput of a communication system. Quality of Service Tag (QoS Tag) is a parameter used in the network to identify data flow priority and resource allocation requirements, ensuring that critical services receive priority resources.

[0116] In one possible implementation of an embodiment of the present application, when a target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and the priority corresponding to each of the multiple candidate transmission modes; or, the target transmission mode is determined based on the multiple candidate transmission modes and the weight value corresponding to each of the multiple candidate transmission modes.

[0117] In an embodiment of the present application, a corresponding priority or weight value can be set in advance for each candidate transmission mode determined based on different conditions, so that after determining multiple candidate transmission modes, the target transmission mode can be further determined from the multiple candidate transmission modes based on the priority or weight value corresponding to each candidate transmission mode in the multiple candidate transmission modes, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0118] It is understood that in embodiments of the present application, a corresponding priority can be pre-determined for the candidate transmission modes determined under each condition based on the importance of each condition. For example, if the fifth candidate transmission mode determined under the service type condition has the highest priority, and the fourth candidate transmission mode determined under the data traffic demand condition has the lowest priority, then when the target candidate transmission mode is determined based on the fifth candidate transmission mode and the fourth candidate transmission mode, since the fifth candidate transmission mode has a higher priority than the fourth candidate transmission mode, the fifth candidate transmission mode can be directly determined as the fifth candidate transmission mode.

[0119] In the embodiment of the present application, a corresponding weight value may be pre-assigned to each condition based on the importance of each condition, and the first transmission mode, the second transmission mode, the third transmission mode, and the fourth transmission mode may be quantified into numerical values, that is, numerical values ​​corresponding to the first transmission mode, the second transmission mode, the third transmission mode, and the fourth transmission mode may be constructed. For example, if the weight value of the fifth candidate transmission mode determined under the service type condition is the first weight value, and the weight value of the fourth candidate transmission mode determined under the data traffic demand condition is the second weight value, then a weighted sum may be performed based on the numerical value corresponding to the fifth candidate mode, the first weight value, the numerical value corresponding to the fourth candidate mode, and the second weight value to obtain a specific numerical value, and then the corresponding target transmission mode may be determined based on this numerical value.

[0120] 202. The network device sends a synchronization signal block based on the target transmission mode, and correspondingly, the terminal device receives the synchronization signal block based on the target transmission mode.

[0121] In an embodiment of the present application, after receiving the first indication information, the network device can determine the target transmission mode of the synchronization signal block based on the first indication information, and can further determine the parameters corresponding to the target transmission mode, so that the synchronization signal block can be sent based on the parameters corresponding to the target transmission mode. For example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, and the terminal device can receive the synchronization signal block based on the parameters corresponding to the target transmission mode, thereby completing cell synchronization or cell measurement based on the received synchronization signal block, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of broadcasting the synchronization signal block with fixed parameters, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0122] In one possible implementation of an embodiment of the present application, the network device may be pre-configured with a condition for stopping transmission of a synchronization signal block. When the network device determines that the transmission of the synchronization signal block satisfies the condition for stopping transmission of the synchronization signal block, it may stop sending the synchronization signal block based on the target transmission mode, and may notify the terminal device in an implicit or explicit manner. The condition for stopping transmission may include that the number of transmissions of the synchronization signal block reaches the burst number of the synchronization signal block corresponding to the target transmission mode, or that the transmission time of the synchronization signal block reaches the maximum duration T_max of the transmission window corresponding to the target transmission mode. The network device may pre-configure the condition for stopping transmission of the synchronization signal block to the terminal device, that is, it may implicitly inform the terminal device that the synchronization signal block stops transmitting, or the network device may send the instruction for stopping transmission of the synchronization signal block to the terminal device through downlink signaling, that is, it may explicitly inform the terminal device that the synchronization signal block stops transmitting.

[0123] It can be seen from the examples of the aforementioned embodiments that the terminal device can request the target transmission mode of the synchronization signal block from the network device through the first indication information, that is, the terminal device can inform the network device of the terminal device's demand for the synchronization signal block through the first indication information, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0124] See also Figure 3 , Figure 3 The figure is a flow chart of another communication method provided in an embodiment of the present application. Another communication method provided in an embodiment of the present application mainly includes the following steps:

[0125] 301. A network device sends first configuration information, and correspondingly, a terminal device receives the first configuration information.

[0126] Among them, the first configuration information is used to configure multiple transmission modes of the synchronization signal block or at least one of the parameters or preamble code sets corresponding to the multiple transmission modes; the parameters corresponding to the multiple transmission modes include the period of the synchronization signal block, the number of bursts of the synchronization signal block or the downlink transmission power of the synchronization signal block; the preamble code set includes a second preamble code, the second preamble code is used to indicate the first mode index, and the first mode index is used to indicate multiple transmission modes.

[0127] In an embodiment of the present application, the network device can pre-configure multiple transmission modes of the synchronization signal block, the parameters corresponding to each transmission mode, or a preamble code set including a second preamble code to the terminal device through a first configuration parameter, so that the terminal device can determine the transmission modes that the network device can implement, the parameters corresponding to each transmission mode, and the second preamble code corresponding to each transmission mode, so that the terminal device can determine the target transmission mode of the synchronization signal block according to its own needs and the parameters corresponding to each transmission mode, and inform the network device based on the preamble code corresponding to the target transmission mode, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0128] It is understandable that the network device can predetermine the transmission modes of the synchronization signal blocks that it can support and the parameters corresponding to each transmission mode, and can configure the transmission mode of the synchronization signal block and the parameters corresponding to the transmission mode to the terminal device based on the first configuration information, so that the terminal device can determine the corresponding target transmission mode from the transmission mode of the synchronization signal block configured by the network device according to its own needs for the synchronization signal block, and can receive the synchronization signal block according to the parameters corresponding to the target transmission mode. In addition, the network device can also determine a first mode index for indicating the transmission mode of the synchronization signal block, wherein the first mode index may include first indication information, and the first indication information is used to indicate the target transmission mode determined by the terminal device from the transmission mode configured by the network device. After determining the first mode index, the network device can further determine the second preamble code based on the first mode index, and can summarize the second preamble code in a preamble code set, and configure the preamble code set to the terminal device through the first configuration information, so that after the terminal device determines the target transmission mode of the synchronization signal block, it can determine the first preamble code corresponding to the target transmission mode from the preamble code set, that is, the second preamble code can include the first preamble code, and based on the first preamble code, the target transmission mode determined by the terminal device is informed to the network device.

[0129] In one possible implementation of an embodiment of the present application, the parameters corresponding to the multiple transmission modes also include at least one of the subcarrier spacing of the synchronization signal block, the physical cell identification information of the synchronization signal block, the identification information of the target cell, or the maximum duration of the transmission window, where the target cell is the cell corresponding to the terminal device.

[0130] In an embodiment of the present application, the parameters corresponding to the transmission mode configured by the network device based on the first configuration information may also include at least one of the subcarrier spacing of the synchronization signal block, the physical cell identification information of the synchronization signal block, the identification information of the target cell, or the maximum duration of the transmission window, so that after the terminal device determines the target transmission mode of the synchronization signal block, it can accurately receive the synchronization signal block sent by the network device based on the parameters corresponding to the target transmission mode, thereby improving network resource utilization or improving network connection stability.

[0131] It is understood that the subcarrier spacing (SCS) is the basic unit of frequency domain resources in the synchronization signal block and determines the symbol length and time slot structure. The physical cell identity (PCI) is a physical layer identifier used to uniquely identify a cell. The target cell can include the primary cell (PCell) or secondary cell (SCell) corresponding to the terminal device. The primary cell is the cell to which the user equipment establishes a connection when initially accessing the network and is the anchor cell in carrier aggregation. The secondary cell is a cell dynamically added in carrier aggregation to increase data transmission rates and only carries user-plane data. The target cell identification information refers to the identifier used to identify the target cell. The maximum transmission window duration T_max refers to the maximum time limit for synchronization signal block transmission in the time domain. The maximum transmission window duration can also serve as an implicit condition for stopping transmission of synchronization signal blocks.

[0132] In addition, the parameters corresponding to the transmission mode configured by the first configuration information may also include parameters such as a system frame number offset, a half-frame index value, a candidate burst position list of a synchronization signal block, a candidate period list of a synchronization signal block, or a candidate burst number list of a synchronization signal block, which may be set according to actual conditions and are not limited in this embodiment of the present application. The candidate burst position list of a synchronization signal block may include one or more possible position information of a synchronization signal block, the candidate burst position list of a synchronization signal block may include one or more possible transmission periods, and the candidate burst number list of a synchronization signal block may include one or more possible burst numbers of a synchronization signal block.

[0133] The following describes a possible communication process before the network sends the first configuration information:

[0134] When a terminal device first accesses the network, it initiates a cell search process to establish an initial connection with the primary cell. The primary cell transmits traditional synchronization signal blocks (SSBs) at a fixed frequency. The terminal device scans the downlink frequency band to detect the primary and secondary synchronization signals, achieving time and frequency synchronization with the primary cell. It also obtains the cell's physical layer identity and determines the basic parameters of the cell. Furthermore, the terminal device receives the AO-SSB and parses the primary cell's key system information in the physical broadcast channel to determine the primary cell's physical layer configuration. After obtaining the physical layer parameters, the terminal device establishes a Radio Resource Control (RRC) connection through a random access process. This key system information may include the cell identity, subcarrier spacing, system frame number, downlink bandwidth, antenna configuration, AO-SSB location indicator, and cell barring status.

[0135] After completing physical layer synchronization, the terminal device establishes an RRC connection through the random access process. The terminal device sends a random access preamble, and the network device responds after receiving it. After several message exchanges, the terminal device finally successfully establishes the RRC connection.

[0136] When the network equipment uses a load prediction model to predict that the physical resource block (PRB) utilization of the primary cell will continue to exceed the pre-configured threshold over the next period of time, or detects that the number of active users exceeds the pre-configured threshold for the primary cell capacity, or the proportion of enhanced mobile broadband services exceeds the pre-configured threshold, the network equipment will trigger the pre-configuration process of the secondary cell to prepare for increasing the capacity of the primary cell in advance. Alternatively, the network equipment can use a static trigger mechanism based on real-time load thresholds to determine whether to prepare for increasing the capacity of the primary cell in advance.

[0137] The load prediction model can utilize a long short-term memory (LSTM) neural network, analyzing historical traffic patterns to determine whether a primary cell load surge will occur in the future. Preconfigured thresholds are thresholds that trigger the secondary cell preconfiguration process in advance when the network predicts a potential primary cell load surge. These thresholds are used to proactively prepare secondary cell resources rather than directly activate them. Their core goal is to reduce signaling delays during subsequent activations by preconfiguring parameters, while also avoiding capacity shortages caused by real-time load surges. For example, the preconfigured threshold for PRB utilization can be 75%; the preconfigured threshold for the number of active users can be 70% of the primary cell capacity; and the preconfigured threshold for the proportion of enhanced mobile broadband services can be 50%. Specifically, the preconfigured thresholds can be dynamically adjusted by combining the LSTM model to predict load trends. The static triggering mechanism for real-time load thresholds triggers secondary cell preconfiguration based on pre-set real-time indicator thresholds. This mechanism does not rely on artificial intelligence or machine learning prediction models, but instead directly monitors current network status, such as PRB utilization, number of users, and proportion of service types, to determine whether they meet pre-set thresholds.

[0138] When the network device determines that the secondary cell pre-configuration process needs to be triggered through a static trigger mechanism based on a load prediction model or real-time load threshold, the network device will pre-configure the secondary cell for the terminal device through RRC reconfiguration. During this process, the network device will also send the secondary cell configuration parameters. However, at this time, the secondary cell is in a deactivated state, that is, although the secondary cell has been configured for the terminal device, the terminal device has not yet received a secondary cell activation command. In order to optimize the access performance of the secondary cell in advance, the network device can send first configuration information to the terminal device through RRC signaling, so that the terminal device can complete the relevant configuration of the synchronization signal block based on the first configuration information.

[0139] 302. The terminal device sends first indication information, and correspondingly, the network device receives the first indication information.

[0140] Among them, the first indication information is used to indicate the target transmission mode of the synchronization signal block, the target transmission mode includes any one of a plurality of transmission modes, the parameters corresponding to the plurality of transmission modes include the period of the synchronization signal block, and the period of the synchronization signal block corresponding to each transmission mode is different.

[0141] The specific content of step 302 can refer to step 201 in the above embodiment, and will not be repeated here in this embodiment of the present application.

[0142] 303. The network device sends a first message, and correspondingly, the terminal device receives the first message.

[0143] Among them, the first message is used to indicate the activation of the target transmission mode, and the first message includes at least one of the first indication information, the identification information of the target cell or the second indication information, and the second indication information is used to indicate the beam direction corresponding to the synchronization signal block.

[0144] In an embodiment of the present application, after receiving the first indication information and determining the target transmission mode of the synchronization signal block based on the first indication information, the network device can determine whether to transmit the synchronization signal block based on the target transmission mode requested by the terminal device based on its own resource status, such as the physical resource block utilization rate, and the parameters corresponding to the target transmission mode, and when determining to transmit the synchronization signal block based on the target transmission mode, it can indicate the activation of the target transmission mode through a first message, so that the terminal device can determine that the network device can transmit the synchronization signal block based on the target transmission mode, and can further prepare to receive the synchronization signal block based on the target transmission mode based on the identification information of the target cell included in the first indication information or the second indication information for indicating the beam direction corresponding to the synchronization signal block, so that the transmission of the synchronization signal block can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability. Among them, the first message can also be called a mode activation instruction.

[0145] It can be understood that if the target transmission mode of the synchronization signal block requested by the terminal device does not match the resources of the network device or there are multiple terminal devices requesting different transmission modes of the synchronization signal blocks, the network device can adjust the target transmission mode of the synchronization signal block requested by the terminal device, determine a new target transmission mode from other transmission modes, and send the first indication information corresponding to the new target transmission mode to the terminal device through a first message, so that the terminal device can determine the target transmission mode of the synchronization signal block based on the first message.

[0146] In addition, the beam direction corresponding to the synchronization signal block can be determined by the network device. Specifically, the network device can use an artificial intelligence model or a machine learning model to determine the reachable area of ​​the terminal device in the future based on historical beam usage records, such as the optimal beam index of the terminal device at different locations, global positioning system data and three-dimensional geographic information, and filter out the beam direction of the synchronization signal block that the terminal device can receive within a certain time range. In this way, the synchronization signal block can be transmitted only in the beam direction that is reachable by the terminal device, reducing the energy consumption and neighboring cell interference caused by omnidirectional transmission. Or the network device can reversely infer the geographical location of the terminal device based on the location information between the primary cell and the secondary cell, and the time difference or arrival angle between them to receive the terminal device signal. Combined with information such as the reference signal receiving power of the primary cell that is periodically reported, the beam direction of the synchronization signal block that the terminal device can receive within a certain time range is filtered out.

[0147] 304. The network device sends a synchronization signal block based on the target transmission mode, and correspondingly, the terminal device receives the synchronization signal block based on the target transmission mode.

[0148] The specific content of step 304 can refer to step 202 in the above embodiment, and will not be repeated here in this embodiment of the present application.

[0149] It can be seen from the examples of the aforementioned embodiments that the terminal device can request the target transmission mode of the synchronization signal block from the network device through the first indication information, that is, the terminal device can inform the network device of the terminal device's demand for the synchronization signal block through the first indication information, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0150] See also Figure 4 , Figure 4 The figure is a flow chart of another communication method provided in an embodiment of the present application. Another communication method provided in an embodiment of the present application mainly includes the following steps:

[0151] 401. The terminal device sends a first request message, and correspondingly, the network device receives the first request message.

[0152] The first request message is used to request the first resource, and the first indication information is sent based on the first resource.

[0153] In an embodiment of the present application, a terminal device first sends a first request message to a network device to request the first resource required to send the first indication information, so that after receiving third indication information indicating the first resource, the terminal device can request the network device for the target transmission mode of the synchronization signal block through the first indication information. It is understood that after the secondary cell is activated, while the terminal device is still in an RRC connection state with the secondary cell, the terminal device can independently trigger the sending of the first indication information by monitoring its own status, service requirements, and other conditions or related parameters in real time. In other words, the terminal device can determine the current demand for the synchronization signal block based on the monitored conditions, service requirements, and other conditions or related parameters, and then determine the target transmission mode of the synchronization signal block from one or more transmission modes based on the current demand for the synchronization signal block. Before requesting the target transmission mode of the synchronization signal block from the network device, the terminal device can first request the first resource from the network device through the first request message. For example, the first request message can be a 1-bit uplink control information (UCI) signaling, and the first request message can be called a transmission mode uplink scheduling request.

[0154] 402. The network device sends third indication information, and correspondingly, the terminal device receives the third indication information.

[0155] The third indication information is used to indicate the first resource.

[0156] In an embodiment of the present application, after receiving the first request message for requesting the first resource, the network device can configure the first resource to the terminal device based on the third indication information, so that after receiving the third indication information for indicating the first resource, the terminal device can request the target transmission mode of the synchronization signal block from the network device through the first indication information, that is, the terminal device can inform the network device of the terminal device's demand for the synchronization signal block through the first indication information. The first resource can be the time-frequency resources and related parameters required to send the first information. The core function of the first resource is to coordinate the uplink transmission timing of the terminal device, ensure the accurate matching of the sending of the first indication information and the receiving resources of the network device, avoid collisions and improve access efficiency. The time-frequency resources can include the frequency domain starting resource block (RB Start), the time domain transmission time slot (Slot Number) and the orthogonal frequency division multiplexing (OFDM) symbol position (Symbol Index), etc. For example, the third indication information can be called an uplink scheduling command.

[0157] 403. The terminal device sends first indication information, and correspondingly, the network device receives the first indication information.

[0158] Among them, the first indication information is used to indicate the target transmission mode of the synchronization signal block, the target transmission mode includes any one of a plurality of transmission modes, the parameters corresponding to the plurality of transmission modes include the period of the synchronization signal block, and the period of the synchronization signal block corresponding to each transmission mode is different.

[0159] The specific content of step 403 can refer to step 201 in the above embodiment, and will not be repeated here in this embodiment of the present application.

[0160] 404. The network device sends a synchronization signal block based on the target transmission mode, and correspondingly, the terminal device receives the synchronization signal block based on the target transmission mode.

[0161] The specific content of step 404 can refer to step 202 in the above embodiment, and will not be repeated here in this embodiment of the present application.

[0162] In addition, if the primary cell determines that the load will be very low over a period of time, for example, if the primary cell uses a load prediction model to determine that the load within the primary cell's coverage area will be less than 10% within the next 30 seconds, or if the secondary cell determines that the load will be continuously below the deactivation threshold for a period of time, and if the secondary cell detects no access requests from terminal devices for 20 consecutive periods and the PRB utilization rate is above the threshold, it can be determined to be extremely low load. The network device can send a secondary cell deactivation command to the terminal device, deactivating the secondary cell and disconnecting the terminal device from the secondary cell. The secondary cell deactivation command can be Downlink Control Information (DCI) signaling. After receiving the DCI signaling, the terminal device stops sending any uplink signals to the secondary cell, releases the RRC connection configuration related to the secondary cell, and returns to a single connection state with the primary cell. The secondary cell deactivation command refers to the network device sending a secondary cell deactivation command using DCI format 1_0, namely, issuing a secondary cell activation flag and setting the secondary cell activation flag in the terminal device configuration to "0", thus completing the deactivation of the secondary cell.

[0163] It can be seen from the examples of the aforementioned embodiments that the terminal device can request the target transmission mode of the synchronization signal block from the network device through the first indication information, that is, the terminal device can inform the network device of the terminal device's demand for the synchronization signal block through the first indication information, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0164] Figure 5 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device is used to implement the functions of the first communication device in the above method embodiment, and the communication device specifically includes:

[0165] a sending module 501, configured to send first indication information, where the first indication information is used to indicate a target transmission mode of a synchronization signal block, where the target transmission mode includes any one of multiple transmission modes, and parameters corresponding to the multiple transmission modes include a period of the synchronization signal block, where the period of the synchronization signal block corresponding to each transmission mode is different;

[0166] The receiving module 502 is used to receive the synchronization signal block, which is sent based on the target transmission mode.

[0167] In a possible implementation of an embodiment of the present application, the multiple transmission modes include at least one of a first transmission mode, a second transmission mode, a third transmission mode or a fourth transmission mode, the period of the synchronization signal block corresponding to the first transmission mode is smaller than the period of the synchronization signal block corresponding to the second transmission mode, the period of the synchronization signal block corresponding to the second transmission mode is smaller than the period of the synchronization signal block corresponding to the third transmission mode, and the period of the synchronization signal block corresponding to the third transmission mode is smaller than the period of the synchronization signal block corresponding to the fourth transmission mode.

[0168] In a possible implementation of an embodiment of the present application, the parameters corresponding to the multiple transmission modes also include at least one of the burst number of the synchronization signal block or the downlink transmission power of the synchronization signal block, and the burst number of the synchronization signal block and the burst number of the synchronization signal block corresponding to each transmission mode are different.

[0169] In a possible implementation of an embodiment of the present application, the first indication information is indicated by a first preamble code, and the first preamble code is determined based on the first indication information.

[0170] In one possible implementation of an embodiment of the present application, the first preamble code is determined based on at least one of a pattern phase offset, a root index, or a cyclic shift step, and at least one of the pattern phase offset, the root index, or the cyclic shift step is determined based on the first indication information.

[0171] In a possible implementation of an embodiment of the present application, the target transmission mode is determined based on one or more candidate transmission modes, and the one or more candidate transmission modes include at least one of a first candidate transmission mode, a second candidate transmission mode, a third candidate transmission mode, a fourth candidate transmission mode, or a fifth candidate transmission mode; the first candidate transmission mode is determined based on the Doppler frequency shift of a reference signal, the second candidate transmission mode is determined based on at least one of a reference signal received power or a reference signal received quality, the third candidate transmission mode is determined based on a neighboring cell interference intensity value, the fourth candidate transmission mode is determined based on a data transmission rate, and the fifth candidate transmission mode is determined based on a quality of service mark, and the first candidate transmission mode, the second candidate transmission mode, the third candidate transmission mode, the fourth candidate transmission mode, and the fifth candidate transmission mode respectively include any one of the first transmission mode, the second transmission mode, the third transmission mode, or the fourth transmission mode.

[0172] In one possible implementation of the embodiment of the present application, when the target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and a priority corresponding to each candidate transmission mode in the multiple candidate transmission modes;

[0173] Alternatively, in a case where the target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and a weight value corresponding to each of the multiple candidate transmission modes.

[0174] In one possible implementation of the embodiment of the present application, the apparatus further includes:

[0175] The receiving module 502 is also used to receive first configuration information, wherein the first configuration information is used to configure multiple transmission modes of the synchronization signal block or at least one of the parameters or preamble code sets corresponding to the multiple transmission modes; the parameters corresponding to the multiple transmission modes include the period of the synchronization signal block, the number of bursts of the synchronization signal block, or the downlink transmission power of the synchronization signal block; the preamble code set includes a second preamble code, wherein the second preamble code is used to indicate the first mode index, and the second preamble code is determined based on the first mode index, and the first mode index is used to indicate the multiple transmission modes.

[0176] In a possible implementation of an embodiment of the present application, the parameters corresponding to the multiple transmission modes also include at least one of the subcarrier spacing of the synchronization signal block, the physical cell identification information of the synchronization signal block, the identification information of the target cell, or the maximum duration of the transmission window, and the target cell is the cell corresponding to the terminal device.

[0177] In one possible implementation of the embodiment of the present application, the apparatus further includes:

[0178] The receiving module 502 is also used to receive a first message, where the first message is used to indicate that the target transmission mode is activated. The first message includes at least one of the first indication information, identification information of the target cell, or second indication information, and the second indication information is used to indicate the beam direction corresponding to the synchronization signal block.

[0179] In one possible implementation of the embodiment of the present application, the apparatus further includes:

[0180] The sending module 501 is further configured to send a first request message, where the first request message is used to request a first resource, and the first resource is used to send the first indication information;

[0181] The receiving module 502 receives third indication information, where the third indication information is used to indicate the first resource.

[0182] It can be seen from the examples of the aforementioned embodiments that the terminal device can request the target transmission mode of the synchronization signal block from the network device through the first indication information, that is, the terminal device can inform the network device of the terminal device's demand for the synchronization signal block through the first indication information, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0183] It should be noted that the physical device corresponding to the sending module 501 may be a transmitter, and the physical device corresponding to the receiving module 502 may be a receiver.

[0184] above Figure 5 The communication device can also be used to implement the function of the second communication device in the above method embodiment, and the communication device specifically includes:

[0185] a receiving module 502 configured to receive first indication information, where the first indication information is used to indicate a target transmission mode of a synchronization signal block, where the target transmission mode includes any one of multiple transmission modes, and parameters corresponding to the multiple transmission modes include a period of the synchronization signal block, where the period of the synchronization signal block corresponding to each transmission mode is different;

[0186] The sending module 501 is used to send the synchronization signal block, and the synchronization signal block is sent based on the target transmission mode.

[0187] In a possible implementation of an embodiment of the present application, the multiple transmission modes include at least one of a first transmission mode, a second transmission mode, a third transmission mode or a fourth transmission mode, the period of the synchronization signal block corresponding to the first transmission mode is smaller than the period of the synchronization signal block corresponding to the second transmission mode, the period of the synchronization signal block corresponding to the second transmission mode is smaller than the period of the synchronization signal block corresponding to the third transmission mode, and the period of the synchronization signal block corresponding to the third transmission mode is smaller than the period of the synchronization signal block corresponding to the fourth transmission mode.

[0188] In a possible implementation of an embodiment of the present application, the parameters corresponding to the multiple transmission modes also include at least one of the burst number of the synchronization signal block or the downlink transmission power of the synchronization signal block.

[0189] In a possible implementation of an embodiment of the present application, the first indication information is indicated by a first preamble code, and the first preamble code is determined based on the first indication information.

[0190] In one possible implementation of an embodiment of the present application, the first preamble code is determined based on at least one of a pattern phase offset, a root index, or a cyclic shift step, and at least one of the pattern phase offset, the root index, or the cyclic shift step is determined based on the first indication information.

[0191] In a possible implementation of an embodiment of the present application, the target transmission mode is determined based on one or more candidate transmission modes, and the one or more candidate transmission modes include at least one of a first candidate transmission mode, a second candidate transmission mode, a third candidate transmission mode, a fourth candidate transmission mode, or a fifth candidate transmission mode; the first candidate transmission mode is determined based on the Doppler frequency shift of a reference signal, the second candidate transmission mode is determined based on at least one of a reference signal received power or a reference signal received quality, the third candidate transmission mode is determined based on a neighboring cell interference intensity value, the fourth candidate transmission mode is determined based on a data transmission rate, and the fifth candidate transmission mode is determined based on a quality of service mark, and the first candidate transmission mode, the second candidate transmission mode, the third candidate transmission mode, the fourth candidate transmission mode, and the fifth candidate transmission mode respectively include any one of the first transmission mode, the second transmission mode, the third transmission mode, or the fourth transmission mode.

[0192] In one possible implementation of the embodiment of the present application, when the target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and a priority corresponding to each candidate transmission mode in the multiple candidate transmission modes;

[0193] Alternatively, in a case where the target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and a weight value corresponding to each of the multiple candidate transmission modes.

[0194] In one possible implementation of the embodiment of the present application, the apparatus further includes:

[0195] The sending module 501 is also used to send first configuration information, wherein the first configuration information is used to configure multiple transmission modes of the synchronization signal block or at least one of the parameters or preamble code sets corresponding to the multiple transmission modes; the parameters corresponding to the multiple transmission modes include the period of the synchronization signal block, the number of bursts of the synchronization signal block, or the downlink transmission power of the synchronization signal block; the preamble code set includes a second preamble code, wherein the second preamble code is used to indicate the first mode index, and the second preamble code is determined based on the first mode index, and the first mode index is used to indicate the multiple transmission modes.

[0196] In a possible implementation of an embodiment of the present application, the parameters corresponding to the multiple transmission modes also include at least one of the subcarrier spacing of the synchronization signal block, the physical cell identification information of the synchronization signal block, the identification information of the target cell, or the maximum duration of the transmission window, and the target cell is the cell corresponding to the terminal device.

[0197] In one possible implementation of the embodiment of the present application, the apparatus further includes:

[0198] The sending module 501 is also used to send a first message, where the first message is used to indicate that the target transmission mode is activated. The first message includes at least one of the first indication information, identification information of the target cell, or second indication information, and the second indication information is used to indicate the beam direction corresponding to the synchronization signal block.

[0199] In one possible implementation of the embodiment of the present application, the apparatus further includes:

[0200] The receiving module 502 is further configured to receive a first request message, where the first request message is used to request a first resource, and the first indication information is sent based on the first resource;

[0201] The sending module 501 is further configured to send third indication information, where the third indication information is used to indicate the first resource.

[0202] It can be seen from the examples of the aforementioned embodiments that the terminal device can request the target transmission mode of the synchronization signal block from the network device through the first indication information, that is, the terminal device can inform the network device of the terminal device's demand for the synchronization signal block through the first indication information, so that the network device can transmit the synchronization signal block based on the parameters corresponding to the target transmission mode, for example, the synchronization signal block can be transmitted based on the period corresponding to the target transmission mode, that is, the network device can dynamically adjust the parameters when sending the synchronization signal block based on the terminal device's demand for the synchronization signal block. Compared with the prior art of using fixed parameters to broadcast the synchronization signal block, it can flexibly adapt to the needs of the network under different load states, thereby improving network resource utilization or improving network connection stability.

[0203] Figure 6 This is an example of the composition of an electronic device provided in an embodiment of the present application. The electronic device may be a first device, including but not limited to a base station and a core network unit. Figure 6 A simplified schematic diagram of the base station structure is shown. The base station includes a processor 610, a memory 620, and a transceiver 630. The processor 610 is mainly used for baseband processing, controlling the base station, etc.; the processor 610 is usually the control center of the base station, used to control the base station to perform the processing operations on the first device side in the above method embodiment. The memory 620 is mainly used to store computer program code and data. The transceiver 630 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals; the transceiver 630 can generally be called a transceiver module, a transceiver or a transceiver circuit, etc. The transceiver module of the transceiver 630, which can also be called a transceiver or a transceiver, etc., includes an antenna 633 and a radio frequency circuit ( Figure 6 ), wherein the RF circuit is primarily used for RF processing. Alternatively, the device used to implement the receiving function in transceiver 630 can be considered a receiver, and the device used to implement the transmitting function can be considered a transmitter. That is, transceiver 630 includes a receiver 632 and a transmitter 631. The receiver can also be referred to as a receiving module, a receiver, or a receiving circuit, and the transmitter can be referred to as a transmitting module, a transmitter, or a transmitting circuit.

[0204] The processor 610 and memory 620 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control the base station. If multiple boards are present, the boards may be interconnected to enhance processing capabilities. As an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may simultaneously share one or more processors.

[0205] For example, in one implementation, the transceiver module of the transceiver 630 is configured to execute the transceiver-related processes executed by the base station (first device) in the aforementioned method embodiment. The processor module of the processor 610 is configured to execute the processing-related processes executed by the base station in the aforementioned method embodiment.

[0206] It should be understood that Figure 6 This is only an example and not a limitation. The network device including the processor, memory and transceiver may not rely on Figure 6 The structure shown.

[0207] The present application also provides a communication system, which may include a first device (for example, a network device such as a base station) and a second device (for example, a terminal device such as a mobile phone).

[0208] In this application, a terminal device or network device may include a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also known as main memory). The operating system in the operating system layer may be any one or more computer operating systems that implement service processing through processes, such as the Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0209] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems, devices and modules can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0210] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules is merely a logical function division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or module, which can be electrical, mechanical or other forms.

[0211] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected to achieve the purpose of this embodiment according to actual needs.

[0212] In addition, the functional modules in the various embodiments of the present application may be integrated into a processing module, or each module may exist physically separately, or two or more modules may be integrated into a single module. The above-mentioned integrated modules may be implemented in the form of hardware or software functional modules.

[0213] If the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the part that essentially contributes to the technical solution of this application or all or part of the technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the process of the method described in each embodiment of this application. The aforementioned storage medium includes: USB flash drives, mobile hard drives, read-only memories, random access memories, magnetic disks, optical disks, and other media that can store program code.

[0214] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method, characterized in that: Applied to a terminal device, the method includes: Sending first indication information, where the first indication information is used to indicate a target transmission mode of a synchronization signal block, where the target transmission mode includes any one of multiple transmission modes, where parameters corresponding to the multiple transmission modes include a period of the synchronization signal block, where the period of the synchronization signal block corresponding to each transmission mode is different, and where the parameters corresponding to the multiple transmission modes further include at least one of a burst number of the synchronization signal block or a downlink transmission power of the synchronization signal block, where the burst number of the synchronization signal block and the downlink transmission power of the synchronization signal block corresponding to each transmission mode are different; The synchronization signal block is received, and the synchronization signal block is sent based on the target transmission mode.

2. The method according to claim 1, characterized in that The multiple transmission modes include at least one of a first transmission mode, a second transmission mode, a third transmission mode or a fourth transmission mode, the period of the synchronization signal block corresponding to the first transmission mode is smaller than the period of the synchronization signal block corresponding to the second transmission mode, the period of the synchronization signal block corresponding to the second transmission mode is smaller than the period of the synchronization signal block corresponding to the third transmission mode, and the period of the synchronization signal block corresponding to the third transmission mode is smaller than the period of the synchronization signal block corresponding to the fourth transmission mode.

3. The method according to claim 1 or 2, characterized in that The first indication information is indicated by a first preamble code, and the first preamble code is determined based on the first indication information.

4. The method according to claim 3, characterized in that The first preamble code is determined based on at least one of a pattern phase offset, a root index, or a cyclic shift step size, and at least one of the pattern phase offset, the root index, or the cyclic shift step size is determined based on the first indication information.

5. The method according to claim 1, wherein The target transmission mode is determined based on one or more candidate transmission modes, and the one or more candidate transmission modes include at least one of a first candidate transmission mode, a second candidate transmission mode, a third candidate transmission mode, a fourth candidate transmission mode or a fifth candidate transmission mode; the first candidate transmission mode is determined based on the Doppler frequency shift of a reference signal, the second candidate transmission mode is determined based on at least one of a reference signal received power or a reference signal received quality, the third candidate transmission mode is determined based on a neighboring cell interference strength value, the fourth candidate transmission mode is determined based on a data transmission rate, and the fifth candidate transmission mode is determined based on a quality of service mark.

6. The method according to claim 5, characterized in that In a case where the target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and a priority corresponding to each of the multiple candidate transmission modes; Alternatively, in a case where the target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and a weight value corresponding to each of the multiple candidate transmission modes.

7. The method according to claim 1, characterized in that Before sending the first indication information, the method further includes: Receive first configuration information, where the first configuration information is used to configure multiple transmission modes of the synchronization signal block or parameters corresponding to the multiple transmission modes or at least one of the preamble code sets; the parameters corresponding to the multiple transmission modes include the period of the synchronization signal block, the number of bursts of the synchronization signal block, or at least one of the downlink transmission power of the synchronization signal block; the preamble code set includes a second preamble code, where the second preamble code is used to indicate a first mode index, and the first mode index is used to indicate the multiple transmission modes.

8. The method according to claim 7, characterized in that The parameters corresponding to the multiple transmission modes also include at least one of the subcarrier spacing of the synchronization signal block, the physical cell identification information of the synchronization signal block, the identification information of the target cell or the maximum duration of the transmission window, and the target cell is the cell corresponding to the terminal device.

9. The method according to claim 1, characterized in that Before receiving the synchronization signal block, the method further includes: Receive a first message, where the first message is used to indicate that the target transmission mode is activated. The first message includes at least one of the first indication information, identification information of the target cell, or second indication information. The second indication information is used to indicate the beam direction corresponding to the synchronization signal block. The target cell is the cell corresponding to the terminal device.

10. The method according to claim 1, characterized in that Before sending the first indication information, the method further includes: Sending a first request message, where the first request message is used to request a first resource, and the first indication information is sent based on the first resource; Third indication information is received, where the third indication information is used to indicate the first resource.

11. A communication method, characterized in that: Applied to a network device, the method includes: receiving first indication information, where the first indication information is used to indicate a target transmission mode of a synchronization signal block, where the target transmission mode includes any one of multiple transmission modes, where parameters corresponding to the multiple transmission modes include a period of the synchronization signal block, where the period of the synchronization signal block corresponding to each transmission mode is different, and where the parameters corresponding to the multiple transmission modes further include at least one of a burst number of the synchronization signal block or a downlink transmission power of the synchronization signal block, where the burst number of the synchronization signal block and the downlink transmission power of the synchronization signal block corresponding to each transmission mode are different; The synchronization signal block is sent, and the synchronization signal block is sent based on the target transmission mode.

12. The method according to claim 11, characterized in that The multiple transmission modes include at least one of a first transmission mode, a second transmission mode, a third transmission mode or a fourth transmission mode, the period of the synchronization signal block corresponding to the first transmission mode is smaller than the period of the synchronization signal block corresponding to the second transmission mode, the period of the synchronization signal block corresponding to the second transmission mode is smaller than the period of the synchronization signal block corresponding to the third transmission mode, and the period of the synchronization signal block corresponding to the third transmission mode is smaller than the period of the synchronization signal block corresponding to the fourth transmission mode.

13. The method according to claim 11 or 12, characterized in that The first indication information is indicated by a first preamble code, and the first preamble code is determined based on the first indication information.

14. The method according to claim 13, characterized in that The first preamble code is determined based on at least one of a pattern phase offset, a root index, or a cyclic shift step size, and at least one of the pattern phase offset, the root index, or the cyclic shift step size is determined based on the first indication information.

15. The method according to claim 11, characterized in that The target transmission mode is determined based on one or more candidate transmission modes, and the one or more candidate transmission modes include at least one of a first candidate transmission mode, a second candidate transmission mode, a third candidate transmission mode, a fourth candidate transmission mode or a fifth candidate transmission mode; the first candidate transmission mode is determined based on the Doppler frequency shift of a reference signal, the second candidate transmission mode is determined based on at least one of a reference signal received power or a reference signal received quality, the third candidate transmission mode is determined based on a neighboring cell interference strength value, the fourth candidate transmission mode is determined based on a data transmission rate, and the fifth candidate transmission mode is determined based on a quality of service mark.

16. The method according to claim 15, characterized in that In a case where the target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and a priority corresponding to each of the multiple candidate transmission modes; Alternatively, in a case where the target transmission mode is determined based on multiple candidate transmission modes, the target transmission mode is determined based on the multiple candidate transmission modes and a weight value corresponding to each of the multiple candidate transmission modes.

17. The method according to claim 11, characterized in that Before receiving the first indication information, the method further includes: Send first configuration information, where the first configuration information is used to configure multiple transmission modes of the synchronization signal block or parameters corresponding to the multiple transmission modes or at least one of the preamble code sets; the parameters corresponding to the multiple transmission modes include the period of the synchronization signal block, the number of bursts of the synchronization signal block, or at least one of the downlink transmission power of the synchronization signal block; the preamble code set includes a second preamble code, where the second preamble code is used to indicate a first mode index, and the second preamble code is determined based on the first mode index, and the first mode index is used to indicate the multiple transmission modes.

18. The method according to claim 17, characterized in that The parameters corresponding to the multiple transmission modes also include at least one of the subcarrier spacing of the synchronization signal block, the physical cell identification information of the synchronization signal block, the identification information of the target cell or the maximum duration of the transmission window, and the target cell is the cell corresponding to the terminal device.

19. The method according to claim 11, wherein Before sending the synchronization signal block, the method further includes: A first message is sent, where the first message is used to indicate that the target transmission mode is activated, and the first message includes at least one of the first indication information, identification information of the target cell, or second indication information, and the second indication information is used to indicate the beam direction corresponding to the synchronization signal block.

20. The method according to claim 11, characterized in that Before receiving the first indication information, the method further includes: receiving a first request message, where the first request message is used to request a first resource, and the first indication information is sent based on the first resource; Send third indication information, where the third indication information is used to indicate the first resource.

21. A communication device, characterized in that: The apparatus comprises a processor coupled to a memory, wherein the memory stores a program or instruction, and the processor executes the program or instruction so that the apparatus is configured to perform the method according to any one of claims 1 to 20.

22. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instructions are executed, the computer is caused to perform the method according to any one of claims 1 to 20.

23. A communication system, characterized in that: Comprising the communication device as claimed in claim 22.

24. A chip system comprising one or more processors, wherein the one or more processors are configured to call and execute instructions stored in a memory, so that the method according to any one of claims 1 to 20 is executed.

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