Redirection communication method, baseband processing device, terminal and storage medium

Abstract

The invention discloses a redirection communication method, baseband processing equipment, a terminal and a storage medium, and relates to the technical field of communication. The method is applied to a base station and comprises the steps that the load state of each cell is acquired, a target terminal and a target cell are determined based on the load state of each cell, the target terminal is a terminal needing to be redirected in the cells with the load state being high load, and the target cell is a cell with the load state being low load; wherein each cell uses a plurality of frequency points to send SSB signals; obtaining a frequency point list of the target cell, generating redirection information based on the frequency point list, and sending the redirection information to the target terminal; the frequency point list is used for the target terminal to detect the SSB signal of the target cell. Therefore, the problem that the time for re-accessing the terminal to the new cell is too long due to the fact that the SSB signal of the target cell is interfered is solved, the terminal can quickly access the new target cell, and the success rate of terminal access is improved.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a redirected communication method, baseband processing device, terminal, and storage medium. Background Technology

[0002] Fifth-generation (5G) mobile communication New Radio (NR) technology has been widely applied across various industries, placing higher demands on communication reliability and anti-interference capabilities. In NR systems, whether a terminal is accessing the network for the first time or being redirected to a new cell according to base station instructions, it must first successfully receive and parse the target cell's Synchronization Signal Block (SSB).

[0003] However, existing redirection techniques heavily rely on RRC connection release messages to specify a single target frequency for the terminal. In communication environments with widespread and random interference, once this frequency is disturbed, the terminal will fail to redirect because it cannot detect the target cell signal. Consequently, the terminal is forced to initiate a time-consuming full-band search, which not only significantly increases access latency but also severely impacts user experience and the continuity of critical services. Summary of the Invention

[0004] The main objective of this application is to provide a redirection communication method, baseband processing device, terminal, and storage medium to solve the problem of excessively long reconnection time of the terminal to a new cell caused by interference with the SSB signal of the target cell, thereby enabling the terminal to quickly access a new target cell and improving the success rate of terminal access.

[0005] To achieve the above objectives, this application provides a redirection communication method applied to a base station, the method comprising: The load status of each cell is obtained, and the target terminal and target cell are determined based on the load status of each cell. The target terminal is the terminal that needs to be redirected in the cell with a high load status, and the target cell is the cell with a low load status. Each cell transmits SSB signals using multiple frequency points. The frequency list of the target cell is obtained, and redirection information is generated based on the frequency list, and the redirection information is sent to the target terminal; the frequency list is used by the target terminal to detect the SSB signal of the target cell.

[0006] Optionally, the redirection information includes at least the frequency list, PCI information, subcarrier spacing, and measurement timing configuration.

[0007] Optionally, the number of target cells is at least two, and the step of determining the target terminal and target cell based on the load status of each cell includes: sorting each cell in order of load status from low to high based on the load status of each cell; determining the target terminal to be redirected in the cell with the highest load status; and sequentially selecting a preset number of cells as the target cells, starting from the cell with the lowest load status, wherein the preset number is greater than or equal to 2.

[0008] Optionally, the redirection information includes at least a frequency list, PCI information, subcarrier spacing, measurement timing configuration, and priority of each target cell; wherein, the priority of each target cell is determined based on the load status, and the lower the load status, the higher the priority of the corresponding target cell.

[0009] Furthermore, to achieve the above objectives, this application also provides a second redirection communication method applied to a terminal. The method includes: receiving redirection information, the redirection information including at least a frequency point list, PCI information, subcarrier spacing, and measurement timing configuration; based on the measurement timing configuration and the PCI information, detecting SSB information transmitted by the target cell on the frequency points in the frequency point list, traversing the frequency points in the frequency point list until the SSB information of the target cell is detected, and accessing the target cell.

[0010] Optionally, the step of detecting the SSB information transmitted by the target cell on the frequency points in the frequency point list, and traversing the frequency points in the frequency point list until the SSB information of the target cell is detected, includes: sorting each frequency point in the frequency point list from high to low according to the signal-to-interference-plus-noise ratio to obtain a traversal order; detecting the SSB information transmitted by the target cell on the frequency points in the frequency point list, and traversing the frequency points in the frequency point list according to the traversal order until the SSB information of the target cell is detected.

[0011] Optionally, the number of target cells is at least two, and the redirection information includes at least a frequency list, PCI information, subcarrier spacing, measurement timing configuration, and priority of each target cell; the step of detecting SSB information transmitted by the target cell on the frequency points in the frequency list based on the measurement timing configuration and the PCI information, and traversing the frequency points in the frequency list according to the traversal order until the SSB information of the target cell is detected, includes: according to the priority of the target cell, sequentially based on the frequency list, PCI information, subcarrier spacing, measurement timing configuration, and priority of each target cell; The detection process is performed by analyzing the PCI information, subcarrier spacing, and measurement timing configuration, traversing the target cells until SSB information of one of the target cells is detected. Each time the detection process is performed, it includes: based on the measurement timing configuration and PCI information of the target cell, detecting the SSB information transmitted by the target cell on the frequency points in the frequency point list of the target cell, traversing the frequency points in the frequency point list according to the traversal order, stopping the detection if the SSB information of the target cell is detected, and replacing the target cell with the next target cell if the SSB information of the target cell is not detected.

[0012] This application also provides a baseband processing device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the redirected communication method described in the first description above.

[0013] This application also provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the redirected communication method described in the second type above.

[0014] This application also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements either the redirected communication method described in the first description above, or the redirected communication method described in the second description above.

[0015] The redirection communication method of this application involves each cell transmitting SSB signals on multiple frequency points. The base station then determines the target terminal to be redirected and the target cell with low load from the high-load cells, and sends the frequency point list of the target cells to the target terminal. The terminal can quickly identify and detect the SSB signal of the target cell from the listed frequency points. This method, through frequency point traversal, can reliably detect the target signal through other undisturbed frequency points even when some frequency points are interfered with. This effectively solves the problem of excessively long reconnection time for the terminal to a new cell due to interference with the SSB signal of the target cell, enabling the terminal to quickly access a new target cell and improving the success rate of terminal access. Attached Figure Description

[0016] Figure 1 This is a scenario example of the redirected communication method according to an embodiment of this application; Figure 2 This is one of the flowcharts of a redirected communication method according to an embodiment of this application; Figure 3 This is a second flowchart of a redirected communication method according to an embodiment of this application; Figure 4 This is one of the flowcharts of a redirected communication method according to another embodiment of this application; Figure 5 This is a second flowchart of a redirected communication method according to another embodiment of this application; Figure 6 An example is a schematic diagram of the physical structure of a baseband processing device; In the diagram, 110 is the base station; 120 is the cell; 130 is the terminal; 610 is the processor; 620 is the communication interface; 630 is the memory; and 640 is the communication bus.

[0017] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] With the widespread application of fifth-generation mobile communication technology (5G) and its new radio (NR), the services carried by the network are becoming increasingly diversified. In particular, in industry communication scenarios such as industrial automation and the Internet of Things, unprecedented higher requirements are placed on the reliability, real-time performance and anti-interference capabilities of the system.

[0020] In the NR architecture, the Synchronization Signal and PBCH block (SSB) is the cornerstone for establishing and maintaining a connection between a terminal and the network, carrying fundamental information. Specifically, the SSB includes the Primary Synchronization Signals (PSS), Secondary Synchronization Signals (SSS), and the Physical Broadcast Channel (PBCH). In practical applications, an idle terminal must correctly receive the SSB and then detect the broadcast message sent by the target cell before initiating random access. For terminals already connected, the downlink channel link quality between the base station and the terminal is continuously monitored based on the received SSB to maintain downlink synchronization. For redirected terminals, the target cell's SSB is detected based on a redirection frequency carried in the RRRCRelease message sent by the base station, and the target cell's broadcast information is received before initiating access.

[0021] However, in complex industry network deployment environments, wireless interference is prevalent and random, posing a significant challenge to the aforementioned redirection process. Existing redirection methods rely solely on a single target frequency carried in the RRC Release message. Once this specified frequency is interfered with, the terminal cannot detect the target cell's SSB signal within a short time, causing the redirection process to fail. Consequently, the terminal is forced to revert to a time-consuming full-band cell search process, significantly increasing access latency. This not only severely impacts user experience but also fails to meet the stringent requirements of industry applications for seamless handover and high-reliability communication. Therefore, designing an efficient and interference-resistant redirection method to ensure that terminals can quickly and reliably access the target cell in complex electromagnetic environments has become a pressing technical challenge in this field.

[0022] To address this issue, this application provides a redirection communication method, baseband processing device, terminal, and storage medium to solve the problem of excessively long reconnection time for a terminal to a new cell caused by interference with the SSB signal of the target cell. By enabling each cell to transmit SSB signals on multiple frequency points and by sending the PCI information of the target cell to the terminal, the terminal can quickly detect the SSB signal of the target cell on various frequency points. Even if the SSB signal on some frequency points is interfered with, the terminal can still access the target cell through the SSB signal on other frequency points, thereby enabling the terminal to quickly access a new target cell and improving the success rate of terminal access.

[0023] For ease of understanding, this specification provides a scenario example of a redirected communication method, which is applied in situations such as... Figure 1 In the application environment shown, the scenario example includes a base station 110, multiple cells 120, and several terminals 130 in the cells 120. The base station 110 integrates a baseband processing device, which can be used to execute the redirection communication method provided in the first embodiment of this application.

[0024] In this scenario example, cell 120 is the basic service area for wireless network coverage provided by base station 110. Terminal 130 can be any user equipment or machine that needs to use the mobile network. For example, terminal 130 can be a smartphone, computer, vehicle terminal, industrial robot, AGV (automated guided vehicle), etc. There is no specific limitation on terminal 130 here.

[0025] When base station 110 detects that the load on its served cell 120 is too high, or when terminal 130 is moving to the edge coverage area of ​​cell 120, the baseband processing equipment in base station 110 will initiate a redirection process. This baseband processing equipment first obtains the load information of other cells 120 and selects the low-load cell 120 as the target cell. Further, the baseband processing equipment generates an RRC connection release message based on the target cell's frequency list, PCI, and other information. Subsequently, base station 110 sends the RRC connection release message to the terminal 130 to be redirected. Based on the received RRC connection release message, terminal 130 quickly searches and detects the SSB signal of the target cell on each frequency point in the frequency list. Even if some frequency points are interfered with, terminal 130 can quickly complete downlink synchronization with the target cell through other uninterrupted frequency points in the list, then read the system broadcast and initiate access, thereby significantly reducing redirection latency and improving access success rate.

[0026] Referring to the scenario examples of the redirected communication method in the foregoing embodiments, the redirected communication method of this application embodiment will be described in detail below.

[0027] Figure 2 This is one of the flowcharts of a redirected communication method according to an embodiment of this application. This redirected communication method can be executed by the baseband processing device of a base station, such as... Figure 2 As shown, the redirected communication method may include the following steps: Step 210: Obtain the load status of each cell, and determine the target terminal and target cell based on the load status of each cell. The target terminal is the terminal that needs to be redirected in the cell with a high load status, and the target cell is the cell with a low load status. Each cell uses multiple frequency points to transmit SSB signals.

[0028] Step 220: Obtain the frequency list of the target cell, generate redirection information based on the frequency list, and send the redirection information to the target terminal; the frequency list is used by the target terminal to detect the SSB signal of the target cell.

[0029] In this embodiment, the base station can monitor the load indicators of each cell in real time. Specifically, the base station can obtain the load indicators of each cell through communication interfaces and other means. The load status can be determined based on the magnitude of the load indicators. For example, if the load indicator is higher than a certain threshold, the load status is considered high load, and if the load indicator is lower than a certain threshold, the load status is considered low load.

[0030] When a base station detects that a cell is overloaded, it can redirect terminals that need to be redirected within the overloaded cell. In some implementations, the base station can also redirect terminals located at the cell edge in any cell; these terminals that the base station determines need to be redirected can all be used as target terminals in this embodiment. Furthermore, the base station can select low-load cells from the remaining cells as target cells based on the load status of each cell; that is, the new cells that the aforementioned target terminals can reconnect to.

[0031] As an example, if a base station determines, based on the load status of each cell, that the load index of a certain cell is consistently higher than a certain high threshold (e.g., 80%), then a terminal requiring redirection can be selected from that cell as the target terminal. Furthermore, the base station can also, based on the load status of each cell, select cells with load indices lower than a certain low threshold (e.g., 30%) as target cells.

[0032] After identifying the target terminal and the target cell, the base station can obtain the frequency list of the target cell that transmits SSB signals from the target cell. In this embodiment, the base station can also obtain the frequency list of the target cell through communication interfaces or other means. It should be noted that in this embodiment, each cell transmits SSB signals on multiple frequency points, so each cell will have a frequency list for transmitting SSB signals. For example, if the target cell transmits SSB signals on three frequency points: F1 = 3.5GHz, F2 = 3.52GHz, and F3 = 3.48GHz, then the frequency list is [F1, F2, F3].

[0033] Furthermore, after the base station obtains the frequency list of the target cell, it will generate redirection information based on the frequency list of the target cell. The base station will carry the redirection information CarrierInfoNR through the RRC Release message and send the RRC Release message to the target terminal.

[0034] In some implementations, the redirection information includes at least a frequency list, PCI information, subcarrier spacing, and measurement timing configuration. PCI information refers to the physical layer cell identifier (ID) of the cell; subcarrier spacing refers to the parameter set used by the target cell's SSB; and the measurement timing configuration (SMTC) tells the terminal within which time window to perform SSB measurements. Specifically, the measurement timing configuration includes the period and offset of the SSB measurement time window, and the duration of the SSB measurement time window.

[0035] In this embodiment, the base station can also obtain the frequency list, PCI information, subcarrier spacing, and measurement timing configuration of the target cell's SSB signal transmission from the target cell. Specifically, the base station can obtain the frequency list of the target cell through communication interfaces or other means. Further, after obtaining the frequency list, PCI information, subcarrier spacing, and measurement timing configuration of the target cell, the base station generates redirection information based on these information. The base station then sends the redirection information, CarrierInfoNR, to the target terminal via an RRC Release message.

[0036] It is worth mentioning that PCI information, subcarrier spacing, and measurement timing configuration can all enable the target terminal to detect the SSB signal of the target cell more quickly. Specifically, PCI information is used to identify the target cell. After obtaining the PCI information, the target terminal can directly detect the SSB signal of the target cell at various frequency points based on the PCI information, ignoring all SSB signals that do not match the PCI, thereby speeding up the detection process. The measurement timing configuration tells the terminal within which time window to perform SSB measurement. The terminal does not need to continuously detect; it only needs to turn on the receiver to perform measurement within the specified periodic time window, thereby speeding up the detection process and saving power consumption.

[0037] The above is an example of a base station identifying only one cell as the target cell for the target terminal to re-access. The following describes an example of a base station identifying multiple cells as target cells for the target terminal to re-access.

[0038] Figure 3 This is a second flowchart of a redirection communication method according to an embodiment of this application. Figure 3 As shown, in some implementations, the number of target cells is at least two. Step 210, which determines the target terminal and target cell based on the load status of each cell, may include the following steps: Step 310: Based on the load status of each cell, sort the cells in order of load status from low to high; Step 320: Identify the target terminal to be redirected in the cell with the highest load status; Step 330: Starting with the cell with the lowest load status, select a preset number of cells as target cells in sequence, with the preset number being greater than or equal to 2.

[0039] In this embodiment, the base station can sort the cells according to their load status from low to high. Then, the base station can determine the target terminal to be redirected from the cells with the highest load status. Further, starting from the cells with the lowest load status, the base station sequentially selects a preset number of cells as candidate target cells. It should be noted that the preset number can be manually set by the staff according to actual needs, and the preset number must be greater than or equal to 2; no specific limitation is made here.

[0040] As an example, suppose there are three cells: cell A (10% load), cell B (20% load), and cell C (50% load), with a preset quantity of 2. The base station can select cell A or cell B as the target cell, with cell A having a higher priority than cell B. If access fails in cell A due to interference or other reasons, this embodiment allows the target terminal to quickly switch to the suboptimal cell B for further attempts without needing to issue another command, thus forming a two-level protection.

[0041] In some implementations, the redirection information includes at least a list of frequency points corresponding to each target cell, PCI information, subcarrier spacing, measurement timing configuration, and priority of each target cell; wherein, the priority of each target cell is determined based on the load status, and the lower the load status, the higher the priority of the corresponding target cell.

[0042] In this embodiment, the base station can generate redirection information based on the frequency list, PCI information, subcarrier spacing, measurement timing configuration, and priority of each target cell. The base station carries the redirection information through the RRC connection release message and sends the RRC connection release message to the target terminal.

[0043] This embodiment introduces a priority mechanism for multiple target cells, where the target cell with the lowest load has the highest priority. When a target terminal attempts to access a target cell, it will try each target cell in order of priority. The target terminal will first search and access multiple frequency points of the highest priority target cell (lowest load); only when access is unavailable on all frequency points of that target cell will it switch to the next priority target cell.

[0044] Example: The redirection message indicates: Target cell 1 (PCI=58, priority 1), Target cell 2 (PCI=59, priority 2). The target terminal will first attempt to access the target cell with PCI=58, and only after failing on all its frequency points will it begin to attempt to access the target cell with PCI=59.

[0045] The above describes the redirection communication method of this embodiment from the base station side. The following describes the redirection communication method of this embodiment from the terminal side.

[0046] Figure 4 This is one of the flowcharts of a redirected communication method according to another embodiment of this application. This redirected communication method can be executed by a terminal, such as... Figure 4 As shown, the redirected communication method may include the following steps: Step 410: Receive redirection information, which includes at least a frequency list, PCI information, subcarrier spacing, and measurement timing configuration; Step 420: Based on the measurement timing configuration and PCI information, detect the SSB information transmitted by the target cell on the frequency points in the frequency point list, traverse the frequency points in the frequency point list until the SSB information of the target cell is detected, and then access the target cell.

[0047] In this embodiment, the target terminal receives the RRC connection release message sent by the base station and parses the redirection information carried in the RRC connection release message. Based on the measurement timing configuration and PCI information, the target terminal detects the SSB signal of the target cell on the frequency points in the frequency point list. Specifically, the target terminal first wakes up the receiver within the correct time window according to the SMTC configuration; then, it quickly and sequentially detects the SSB signal on each frequency point in the frequency point list specified by the redirection information until the SSB signal of the target cell is detected, and then accesses the target cell.

[0048] In some implementations, the target terminal can also quickly and sequentially detect the SSB signal on each frequency point based on the frequency point list specified by the redirection information and the known PCI information of the target cell, until the SSB signal of the target cell is detected, and then access the target cell. Utilizing the PCI information of the target cell enables faster detection of the target cell's SSB signal, thereby improving the detection efficiency of the target terminal and accelerating its access to the target cell.

[0049] Figure 5 This is a second flowchart of a redirected communication method according to another embodiment of this application. Figure 5As shown, in some implementations, detecting the SSB information transmitted by the target cell on a frequency point in the frequency point list, and traversing the frequency points in the frequency point list until the SSB information of the target cell is detected, may include the following steps: Step 510: Sort the frequency points in the frequency point list from high to low according to the signal-to-interference-plus-noise ratio to obtain the traversal order; Step 520: Detect the SSB information transmitted by the target cell on the frequency points in the frequency point list. Traverse the frequency points in the frequency point list in traversal order until the SSB information of the target cell is detected.

[0050] In this embodiment, the target terminal does not mechanically traverse the frequency point list in order, but rather traverses it in descending order of signal-to-interference-plus-noise ratio (SINR), prioritizing access at the frequency point with the best signal quality. Specifically, the target terminal can select the frequency point with the highest SINR from the frequency point list or select the first frequency point that meets the SINR threshold, thereby enabling faster redirection to the new target cell and saving the configuration message exchange time for measuring multiple SSB frequency points.

[0051] As an example, the frequency list is [F1, F2, F3]. The target terminal determines that F2 has the highest SINR, followed by F1, and F3 has the worst. The target terminal will first attempt to connect on frequency F2. If F2 is successful, the process ends. If F2 cannot decode the PBCH due to interference, it will immediately switch to frequency F1 to try again, and finally frequency F3. This ensures that the target terminal always connects to the frequency with the best quality first, enabling it to access the target cell more quickly.

[0052] The above is an example of a base station identifying only one cell as the target cell for the target terminal to re-access. The following describes an example of a base station identifying multiple cells as target cells for the target terminal to re-access.

[0053] In some implementations, the number of target cells is at least two, and the redirection information includes at least the frequency list, PCI information, subcarrier spacing, measurement timing configuration, and priority of each target cell.

[0054] In step 420, based on the measurement timing configuration and PCI information, the SSB information transmitted by the target cell on the frequency points in the frequency point list is detected. The frequency points in the frequency point list are traversed in traversal order until the SSB information of the target cell is detected. This may include: according to the priority of the target cell, the detection process is performed sequentially based on the frequency point list, PCI information, subcarrier spacing and measurement timing configuration corresponding to each target cell, traversing the target cells until the SSB information of a target cell is detected.

[0055] Each time the detection process is executed, it includes: based on the measurement timing configuration and PCI information of the target cell, detecting the SSB information transmitted by the target cell on the frequency points in the frequency point list of the target cell, traversing the frequency points in the frequency point list in the traversal order, stopping the detection if the SSB information of the target cell is detected, and changing to the next target cell if the SSB information of the target cell is not detected.

[0056] When a base station sends information about multiple target cells to a target terminal, the target terminal can attempt to access each target cell sequentially according to the priority in the redirection information. Specifically, the target terminal iterates through the target cells according to their priority, first attempting the highest priority target cell. The specific process for detecting the highest priority target cell is as follows: according to the SMTC configuration, the receiver is woken up within the correct time window; then, based on the frequency list of the target cell, the frequency points are traversed in descending order of signal-to-interference-plus-noise ratio (SINR), quickly and sequentially detecting the SSB signal on each frequency point until the SSB signal of the target cell is detected, and then the target cell is accessed.

[0057] If access to the target cell is unsuccessful, the target terminal will then detect and attempt to access the next priority target cell in the same way, until the SSB information of any target cell is detected.

[0058] As an example, consider target cell 1 (priority 1, frequency list [F1, F2]) and target cell 2 (priority 2, frequency list [F3, F4]). The target terminal first attempts to access target cell 1. Assuming F2 > F1, it first attempts to access target cell 1 on F2; if that fails, it switches to F1. If both F1 and F2 attempts on target cell 1 fail, it switches to target cell 2. It then attempts to access target cell 2 in the same manner.

[0059] Therefore, this application embodiment fundamentally solves the access failure problem caused by interference with a single redirection frequency point in existing technologies by simultaneously indicating a list of frequency points and Physical Layer Identifiers (PCIs) of multiple target cells in the redirection information element of the RRC connection release message. The terminal can sequentially search for the SSB signal corresponding to the target PCI on multiple frequency points specified by the network, thus enabling rapid detection of the target cell's SSB signal even when some frequency points are interfered with, through other uninterrupted frequency points. This mechanism not only significantly improves the redirection success rate and communication reliability in complex interference environments, but also effectively avoids the huge latency caused by the terminal blindly searching across the entire frequency band through precise PCI limitation and frequency point list guidance. This allows the terminal to achieve fast and accurate cell redirection, significantly improving the user experience, and especially meeting the stringent requirements for low-latency and high-reliability access in scenarios such as industrial IoT and emergency communications.

[0060] Based on the above embodiments, this application also provides a baseband processing device. Figure 6 An example is a schematic diagram of the physical structure of a baseband processing device, such as... Figure 6 As shown, the baseband processing device may include a processor 610, a communication interface 620, a memory 630, and a communication bus 640. The processor 610, communication interface 620, and memory 630 communicate with each other via the communication bus 640. The processor 610 can call logical instructions in the memory 630 to execute a first redirection communication method. This method includes: acquiring the load status of each cell, and determining the target terminal and target cell based on the load status of each cell. The target terminal is the terminal requiring redirection in a cell with a high load status, and the target cell is a cell with a low load status. Each cell transmits SSB signals using multiple frequency points. The method also includes acquiring a frequency point list of the target cell, generating redirection information based on the frequency point list, and sending the redirection information to the target terminal. The frequency point list is used by the target terminal to detect the SSB signal of the target cell.

[0061] Furthermore, the logical instructions in the aforementioned memory 630 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a 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 several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0062] Based on the above embodiments, this application also provides a terminal. The specific structure of the terminal can be referred to the structure of the baseband processing device described above, and will not be repeated here. The processor of the terminal executes a second redirection communication method, which includes: receiving redirection information, the redirection information including at least a frequency point list, PCI information, subcarrier spacing, and measurement timing configuration; based on the measurement timing configuration and PCI information, detecting SSB information transmitted by the target cell on the frequency points in the frequency point list, traversing the frequency points in the frequency point list until the SSB information of the target cell is detected, and accessing the target cell.

[0063] Based on the above embodiments, in another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements either the first redirected communication method as described above, or the second redirected communication method as described above.

[0064] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0065] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A redirection communication method, characterized in that, Applied to a base station, the method includes: The load status of each cell is obtained, and the target terminal and target cell are determined based on the load status of each cell. The target terminal is the terminal that needs to be redirected in the cell with a high load status, and the target cell is the cell with a low load status. Each cell transmits SSB signals using multiple frequency points. The frequency list of the target cell is obtained, and redirection information is generated based on the frequency list, and the redirection information is sent to the target terminal; the frequency list is used by the target terminal to detect the SSB signal of the target cell.

2. The redirection communication method according to claim 1, characterized in that, The redirection information includes at least the frequency list, PCI information, subcarrier spacing, and measurement timing configuration.

3. The redirection communication method according to claim 1, characterized in that, The number of target cells is at least two, and the determination of the target terminal and target cell based on the load status of each of the cells includes: Based on the load status of each cell, the cells are sorted in ascending order of load status; Identify the target terminal that needs to be redirected in the cell where the load status is at its highest. Starting with the cell with the lowest load, a preset number of cells are selected sequentially as the target cells, wherein the preset number is greater than or equal to 2.

4. The redirection communication method according to claim 3, characterized in that, The redirection information includes at least the frequency list, PCI information, subcarrier spacing, measurement timing configuration, and priority of each target cell; The priority of each target cell is determined based on the load status; the lower the load status, the higher the priority of the corresponding target cell.

5. A redirected communication method, characterized in that, Applied to a terminal, the method includes: Receive redirection information, which includes at least a frequency list, PCI information, subcarrier spacing, and measurement timing configuration; Based on the measurement timing configuration and the PCI information, the SSB information transmitted by the target cell on the frequency points in the frequency point list is detected. The frequency points in the frequency point list are traversed until the SSB information of the target cell is detected, and then the target cell is accessed.

6. The redirection communication method according to claim 5, characterized in that, The step of detecting the SSB information transmitted by the target cell on the frequency points in the frequency point list, and traversing the frequency points in the frequency point list until the SSB information of the target cell is detected, includes: Sort the frequency points in the frequency point list from high to low according to the signal-to-interference-plus-noise ratio to obtain the traversal order; The SSB information transmitted by the target cell on the frequency points in the frequency point list is detected, and the frequency points in the frequency point list are traversed in the traversal order until the SSB information of the target cell is detected.

7. The redirection communication method according to claim 6, characterized in that, The number of target cells is at least two, and the redirection information includes at least the frequency list, PCI information, subcarrier spacing, measurement timing configuration, and priority of each target cell for each target cell. Based on the measurement timing configuration and the PCI information, the step of detecting the SSB information transmitted by the target cell on the frequency points in the frequency point list, and traversing the frequency points in the frequency point list according to the traversal order until the SSB information of the target cell is detected, includes: According to the priority of the target cells, the detection process is executed sequentially based on the frequency point list, PCI information, subcarrier spacing and measurement timing configuration corresponding to each target cell, traversing the target cells until the SSB information of a target cell is detected; Each execution of the detection process includes: based on the measurement timing configuration and PCI information of the target cell, detecting the SSB information transmitted by the target cell on the frequency points in the frequency point list of the target cell; traversing the frequency points in the frequency point list according to the traversal order; if the SSB information of the target cell is detected, the detection is stopped; if the SSB information of the target cell is not detected, the next target cell is replaced.

8. A baseband processing device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the redirection communication method as described in any one of claims 1 to 4.

9. A terminal comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the redirected communication method as described in any one of claims 5 to 7.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the redirected communication method as described in any one of claims 1 to 4, or implements the redirected communication method as described in any one of claims 5 to 7.

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