Communication methods, devices, terminals, chips and storage media

Abstract

This application proposes a communication method, apparatus, terminal, chip, and storage medium, relating to the field of communication. The method includes: determining a second offset of a radio frequency (RF) window based on a first offset and a target timing deviation; the first offset characterizes the time-domain positional deviation resulting from the mapping of the MIB in the system message of the target cell to the first timing architecture of the serving cell; the target timing deviation is the cumulative timing deviation measured during the reading of system messages; and determining an RF window from the first timing architecture based on the second offset to receive system messages within the RF window. Thus, the terminal can accurately predict and locate the RF window for receiving SI without switching the Scell ​​timing architecture, and perform Tcell SI reception within the RF window. This achieves accurate positioning and reception of Tcell SI while maintaining the original Scell's first timing architecture unchanged, improving the SI decoding success rate.

Description

Technical Field

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

[0002] In wireless communication systems, signal transmission between terminals and the network relies on precise time synchronization. However, due to the influence of various physical layer and clock source factors, it is difficult to achieve perfect timing synchronization between terminals and the network, resulting in timing offset (TO). Timing offset not only affects the correct demodulation and decoding of signals but can also lead to a significant increase in the bit error rate, thereby reducing system performance. Summary of the Invention

[0003] This application proposes a communication method, apparatus, terminal, chip, and storage medium to at least partially solve one of the technical problems in the related art.

[0004] One embodiment of this application proposes a communication method, including:

[0005] A second offset of the radio frequency window is determined based on the first offset and the target timing deviation; wherein, the first offset is used to characterize the time-domain position deviation generated by mapping the main information block (MIB) in the system message of the target cell to the first timing architecture of the serving cell; the target timing deviation is the cumulative timing deviation measured during the reading of the system message;

[0006] The radio frequency window is determined from the first timing system based on the second offset, so as to receive the system message within the radio frequency window.

[0007] Another embodiment of this application provides a communication device, including:

[0008] The first determining module is used to determine a second offset of the radio frequency window based on the first offset and the target timing deviation; wherein, the first offset is used to characterize the time-domain position deviation generated by mapping the main information block (MIB) in the system message of the target cell to the first timing architecture of the serving cell; the target timing deviation is the cumulative timing deviation measured during the reading of the system message;

[0009] A receiving module is configured to determine the radio frequency window from the first timing system based on the second offset, so as to receive the system message within the radio frequency window.

[0010] Another embodiment of this application proposes a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the communication method as described in the foregoing aspect.

[0011] Another aspect of this application provides a chip including an interface circuit and a processing circuit coupled to each other, the interface circuit being used to input or output signals, and the processing circuit being configured to perform the communication method as described in the preceding aspect.

[0012] In another aspect of this application, a non-transitory computer-readable storage medium is provided, on which computer program instructions are stored, which, when executed by a processor, implement the communication method as described in the foregoing aspect.

[0013] Another aspect of this application provides a computer program product having a computer program stored thereon, which, when executed by a processor, implements the communication method as described in the foregoing aspect.

[0014] The communication method, apparatus, terminal, chip, and storage medium proposed in this application use a first offset to characterize the time-domain position deviation of the Tcell's MIB in its own timing system mapped to the Scell ​​timing system (referred to as the first timing system in this application). The target timing deviation is the cumulative timing deviation measured by the terminal during the reading of the Tcell's SI. Based on these two offsets, the offset of the radio frequency window is determined comprehensively. This allows the terminal to accurately predict and locate the radio frequency window for receiving SI without switching the first timing system of the Scell, and to receive the Tcell's SI within that radio frequency window. This not only enables accurate positioning and reception of the Tcell's SI while maintaining the original first timing system of the Scell, avoiding the increased control complexity, hardware resource consumption, and frequent Global Timer operations caused by frequent switching of timing systems in related technologies, but also significantly reduces the terminal's underlying scheduling burden. Furthermore, since the radio frequency window is dynamically adjusted based on the actual measured cumulative timing deviation, its time alignment accuracy is higher, thereby improving the SI reception quality and decoding success rate. Especially in scenarios with multipath propagation, high mobility, or significant interference, this refined time compensation mechanism can effectively improve the robustness and stability of SI readings.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0017] Figure 1This is a schematic diagram illustrating the principle of TO estimation adjustment in the Tcell timing system of related technologies;

[0018] Figure 2 A flowchart illustrating a communication method provided for an exemplary embodiment of this application;

[0019] Figure 3 A flowchart illustrating another communication method provided for an exemplary embodiment of this application;

[0020] Figure 4 A schematic diagram illustrating the principle of TO estimation adjustment in an Scell ​​timing system, provided for an exemplary embodiment of this application;

[0021] Figure 5 A flowchart illustrating yet another communication method provided for an exemplary embodiment of this application;

[0022] Figure 6 A flowchart illustrating another communication method provided for an exemplary embodiment of this application;

[0023] Figure 7 A flowchart illustrating another communication method provided for an exemplary embodiment of this application;

[0024] Figure 8 A schematic diagram of the structure of a communication device provided for an exemplary embodiment of this application;

[0025] Figure 9 A schematic diagram of the structure of a terminal provided for an exemplary embodiment of this application;

[0026] Figure 10 This is a schematic diagram of the structure of a chip proposed in an exemplary embodiment of this application. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0028] In related technologies, the main sources of timing deviation (TO) include the following:

[0029] 1. Timing drift caused by clock asynchrony

[0030] There is a certain frequency deviation and phase jitter between the local clock source of the terminal and the network side, which is more pronounced in low-cost terminals. This clock mismatch leads to timing drift that accumulates over time, affecting symbol alignment in the uplink and downlink.

[0031] 2. Changes in propagation delay caused by terminal mobility

[0032] In high-speed mobile scenarios, the relative positions between the terminal and the network are constantly changing, causing the air interface propagation path length to dynamically adjust, resulting in a real-time shift in propagation delay. This time-varying propagation delay, caused by the Doppler effect and motion speed, is a significant dynamic factor contributing to timing errors.

[0033] 3. Multipath fading and time-varying characteristics of wireless channels

[0034] Wireless channels inherently exhibit multipath propagation and time-varying fading characteristics. Especially in densely populated urban areas or high-interference environments, signals reach the receiver via multiple reflection paths, resulting in multipath spread and energy dispersion. This not only introduces inter-symbol interference but also makes it difficult for the receiver to accurately estimate the signal arrival time, further exacerbating timing deviation problems.

[0035] In related technologies, during the process of receiving downlink data at the terminal, the system periodically estimates the timing deviation based on different pilot signals. Subsequently, the timing control loop dynamically adjusts the hardware timer device—the Global Timer Register (GTR)—based on the estimation results, thereby aligning the system frame header timing with the air interface transmission timing.

[0036] This timing control mechanism plays a crucial role in maintaining uplink and downlink synchronization and ensuring the stability of the communication link, directly affecting the system's demodulation performance, bit error rate, and overall throughput. Therefore, in wireless communication systems, precise timing control is one of the key technologies for ensuring high-quality communication.

[0037] As an example, taking the Master Information Block (MIB) / System Information Block 1 (SIB1) in the System Information (SI) message for reselecting the target cell (Tcell) in idle (IDLE) mode as an example, it can be done as follows: Figure 1The process shown is used to achieve timed tracking and timed control. Specifically, it employs a timing switching strategy between the Serving Cell (Scell) and the Tcell to track the timing deviation of the Tcell, thereby achieving accurate SI reading of the Tcell. This mainly includes the following steps:

[0038] in, Figure 1 RS in this context is short for Reference Signal.

[0039] 1. Based on the timing deviation between Tcell and Scell ​​in the neighbor cell list, the local timing is switched from the Scell ​​timing system to the Tcell timing system. This means that all downlink reception for Tcell will be based on the Tcell timing system.

[0040] 2. In the Tcell timing system, the estimated TO result is directly used for Tcell timing loop adjustment to ensure timing accuracy when receiving Tcell services;

[0041] 3. Once the SI of Tcell is read, the local timer will switch back from the Tcell timer system to the Scell ​​timer system.

[0042] However, the above solution has obvious limitations: it requires switching the local timing back and forth between the Tcell timing system and the Scell ​​timing system. Especially when paging requests from the Scell ​​need to be processed during the MIB and SIB1 reading of the Tcell, it is necessary to immediately switch back to the Scell ​​timing system to complete the paging reception, and then switch back to the Tcell timing system to continue the unfinished operation. This back-and-forth switching not only increases the complexity of the system, but may also lead to excessive operation of the hardware Global Timer, thereby affecting the overall performance and efficiency.

[0043] Therefore, in view of at least one of the problems existing in the above-mentioned related technologies, this application proposes a communication method, device, terminal, chip and storage medium.

[0044] The communication method, apparatus, terminal, chip, and storage medium of this application are described below with reference to the accompanying drawings. Before specifically describing the embodiments of this application, commonly used technical terms are first introduced for ease of understanding:

[0045] CGI is short for Cell Global Identity.

[0046] SI comprises three parts: MIB, Remaining Minimum SI (RMSI, also known as SIB1), and other system message blocks (including SIB2, SIB3, SIB4, SIB5, etc.). SIB2 and subsequent SIBs are also known as OnDemanded SI (OSI).

[0047] SSB is short for Synchronization Signal and PBCH block, where PBCH is short for Physical Broadcast Channel.

[0048] Figure 2 This is a flowchart illustrating a communication method provided for an exemplary embodiment of this application.

[0049] It should be noted that the communication method of this application embodiment can be applied to a communication device. In some possible embodiments, the communication device can be configured in a terminal or chip so that the terminal or chip can perform communication functions. Additionally, in some possible embodiments, the communication device can also be software within the terminal.

[0050] In any embodiment of this application, the chip can be integrated into a terminal. The chip includes a Central Processing Unit (CPU), an Image Signal Processing (ISP), an Application-Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Field-Programmable Gate Array (FPGA), a System-on-Chip (SOC), a Reduced Instruction Set Computer (RISC), etc., which will not be listed here.

[0051] In this context, a terminal is a user-side entity used to receive or transmit signals, such as a mobile phone. A terminal can also be called a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. Terminals can be communication-enabled vehicles, smart cars, mobile phones, wearable devices, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and so on. The embodiments in this application do not limit the specific technology or device form used in the terminal.

[0052] For ease of explanation, the following description will use the terminal as the executing entity of this communication method as an example.

[0053] like Figure 2 As shown, the communication method may include the following steps S201 to S202:

[0054] Step S201: Determine the second offset of the radio frequency window based on the first offset and the target timing deviation; wherein, the first offset is used to characterize the time-domain position deviation generated by the mapping of the MIB in the SI of the target cell to the first timing system of the serving cell; the target timing deviation is the cumulative timing deviation measured during the SI reading process.

[0055] The first offset is used to characterize the temporal position deviation of the MIB in the SI of Tcell when the temporal position is mapped from the Tcell timing system (referred to as the second timing system in this application) to the Scell ​​timing system (referred to as the first timing system in this application).

[0056] The target timing deviation is the cumulative timing deviation measured during the terminal's reading of the SI of the Tcell.

[0057] The radio frequency window, also known as the radio frequency receiving window, is used to receive the SI of the T cell.

[0058] In this embodiment of the application, the terminal can determine the second offset of the radio frequency window based on the first offset and the target timing deviation. For example, the sum of the first offset and the target timing deviation can be used as the second offset of the radio frequency window.

[0059] Step S202: Determine the radio frequency window from the first timing system based on the second offset, so as to receive system messages within the radio frequency window.

[0060] In this embodiment, the terminal can perform radio frequency windowing under the first timing system of Scell ​​according to the second offset of the radio frequency window to obtain the radio frequency window, and receive the system message SI of Tcell within the radio frequency window.

[0061] It should be noted that the technical solution provided in this application is not only applicable to the timing control of the SI pre-reading process of Tcell in cell reselection scenarios, but can also be extended to other timing control scenarios involving the SI reading process of Tcell, such as the timing control of the SI reading process in manually searched cells or CGI cells (i.e., cells with globally unique identifiers), and has good versatility and adaptability.

[0062] The communication method of this application embodiment uses a first offset to characterize the time-domain position deviation of the Tcell's MIB in its own timing system mapped to the Scell's timing system (i.e., the first timing system). The target timing deviation is the cumulative timing deviation measured by the terminal during the reading of the Tcell's SI. Based on these two offsets, the offset of the radio frequency window is determined comprehensively. This allows the terminal to accurately predict and locate the radio frequency window for receiving SI without switching the Scell's first timing system, and to receive the Tcell's SI within that radio frequency window. This not only achieves accurate positioning and reception of the Tcell's SI while maintaining the original Scell's first timing system, avoiding the increased control complexity, hardware resource consumption, and frequent Global Timer operations caused by frequent timing system switching in related technologies, but also significantly reduces the terminal's underlying scheduling burden. Furthermore, since the radio frequency window is dynamically adjusted based on the actual measured cumulative timing deviation, its time alignment accuracy is higher, thereby improving the SI reception quality and decoding success rate. Especially in scenarios with multipath propagation, high mobility, or significant interference, this refined time compensation mechanism can effectively improve the robustness and stability of SI reading.

[0063] As one possible implementation method, Figure 3 A flowchart illustrating another communication method provided for an exemplary embodiment of this application.

[0064] It should be noted that this communication method can be executed alone, or it can be executed together with any embodiment or possible implementation in the embodiments of this application, or it can be executed together with any technical solution in the related technology. The embodiments of this application do not limit this.

[0065] like Figure 3 As shown, the communication method may include the following steps S301 to S305:

[0066] Step S301: Determine the first timing deviation between the target cell and the serving cell based on the neighboring cell measurement information.

[0067] The first timing deviation, also known as the initial timing deviation, originates from neighboring cell measurements. These neighboring cell measurements are triggered periodically.

[0068] In this embodiment, the timing offset between the target cell Tcell and the terminal's serving cell Scell ​​can be determined based on neighbor cell measurement information, which is referred to as the first timing offset in this application.

[0069] For example, the 10ms timing deviation between Tcell and Scell ​​can be determined based on neighbor cell measurement information.

[0070] Step S302: Based on the first timing offset, the time domain position of the MIB in the SI under the second timing system of the target cell is mapped to the first timing system of the serving cell to obtain the mapped position.

[0071] In this embodiment of the application, the time-domain position of the MIB in the SI of the Tcell under the second timing system of the Tcell can be mapped to the first timing system of the Scell ​​based on the first timing deviation to obtain the mapped position.

[0072] As an example, MIB is in such Figure 4 The example shown illustrates the transmission of subframe 1 under the second timing architecture. The time-domain position of the MIB under the second timing architecture includes the frame header position of subframe 1, and the first timing deviation can be... Figure 4 The timing offset can be used to map the frame header position of subframe 1 under the second timing system to the first timing system, thus obtaining the mapped position. For example, the mapped position could be... Figure 4 The position of the dashed line in subframe 1 under the first timing system.

[0073] Step S303: Determine the first offset based on the mapping position.

[0074] The first offset is used to characterize the temporal location deviation generated by the mapping of the MIB in the SI of the Tcell to the first timing system of the serving cell.

[0075] In this embodiment of the application, the first offset can be determined based on the mapping position under the first timing system.

[0076] Using the example above as an example, we can... Figure 4 The positional offset between the mapped position under the first timing system and the frame header position of subframe 1 is used as the first offset. That is, the first offset can be... Figure 4 Rx_offset in.

[0077] In this application, the MIB in the SI of the Tcell can be transmitted in the first subframe under the second timing system. The temporal location of the MIB in the second timing system of the Tcell includes the frame header location of the first subframe. After mapping the frame header location of the first subframe to the first timing system of the Scell ​​based on the first timing offset, the subframe in which the mapped location is located under the first timing system (referred to as the second subframe in this application, e.g.) can be determined. Figure 4 The frame header position of subframe 1) in the mapping is determined, and the first offset is determined based on the position offset between the mapping position and the frame header position of the second subframe.

[0078] In summary, calculating the first offset based on the positional offset between the frame header position of the second subframe where the mapped position is located under the first timing system and the mapped position can improve the rationality and accuracy of the first offset calculation.

[0079] Step S304: Determine the second offset of the RF window based on the first offset and the target timing deviation; wherein, the target timing deviation is the cumulative timing deviation measured during the reading of system messages.

[0080] Step S305: Determine the radio frequency window from the first timing system based on the second offset, so as to receive system messages within the radio frequency window.

[0081] It should be noted that the explanations of steps S304 to S305 can be found in the relevant descriptions in any embodiment of this application, and will not be repeated here.

[0082] In the communication method of this application embodiment, since the reading process of the Tcell's system message takes a period of time and the neighbor cell measurement is periodic, the neighbor cell measurement information (or neighbor cell timing information) may be the measurement result of an earlier moment, making it difficult to accurately reflect the real-time timing deviation between the current Tcell and Scell. Therefore, in the process of reading the Tcell's system message, the Tcell can be timed based on the initial neighbor cell measurement information. By combining the neighbor cell measurement information and the cumulative timing deviation measured during the reading process of the Tcell's system message, the second offset of the radio frequency window can be determined. This can achieve more accurate positioning of the radio frequency window (or radio frequency receiving window), thereby ensuring the decoding performance and reception reliability of the Tcell's system message.

[0083] As one possible implementation method, Figure 5 A flowchart illustrating yet another communication method provided for an exemplary embodiment of this application.

[0084] It should be noted that this communication method can be executed alone, or it can be executed together with any embodiment or possible implementation in the embodiments of this application, or it can be executed together with any technical solution in the related technology. The embodiments of this application do not limit this.

[0085] like Figure 5 As shown, the communication method may include the following steps S501 to S505:

[0086] Step S501: In response to the fact that the data to be received this time includes the MIB in the SI of the target cell, the target timing offset is initialized.

[0087] The target timing deviation is the cumulative timing deviation measured during the terminal's reading of the SI of the Tcell.

[0088] In this embodiment of the application, when the data to be received by the terminal this time includes the MIB in the SI of the Tcell, the target timing deviation can be initialized.

[0089] For example, the target timing deviation can be marked as T_ACC_TO, and T_ACC_TO can be initialized to 0.

[0090] Step S502: Determine the second offset of the RF window based on the sum of the initial target timing deviation and the first offset.

[0091] It should be noted that the explanation of the first offset in any of the foregoing embodiments also applies to this embodiment, and will not be repeated here.

[0092] In this embodiment of the application, the terminal can use the sum of the initialized target timing deviation and the first offset as the second offset of the radio frequency window for receiving the MIB.

[0093] For example, the first offset is marked as Rx_offset, and the second offset of the radio frequency window used to receive the MIB is Rx_offset + T_ACC_TO = Rx_offset.

[0094] Step S503: Under the first timing system of the serving cell, radio frequency windowing is performed based on the second offset to obtain the radio frequency window.

[0095] In this embodiment, the terminal can perform radio frequency windowing based on a second offset within the first timing system of the Scell ​​to obtain a radio frequency window for receiving the MIB. For example, the radio frequency windowing position can be determined based on the second offset and the frame header position of the second subframe.

[0096] by Figure 4 For example, the length of the RF window can be one subframe. In the first timing system, RF windowing can be performed in subframe 1 with an offset of Rx_offset. That is, RF windowing is performed at a time domain position that is Rx_offset away from the frame header position of subframe 1 to obtain the RF window, so as to receive MIB within the RF window.

[0097] In step S504, the MIB is received within the radio frequency window, and the timing of the synchronization signal block SSB associated with the MIB is estimated simultaneously to obtain the second timing deviation.

[0098] Among them, SSB and MIB multiplexed data, such as PBCH and MIB multiplexed data in SSB.

[0099] The second timing deviation is used to characterize the timing deviation between the SSB currently received by the terminal and the air interface of the target cell.

[0100] In this embodiment of the application, the terminal can receive the MIB within the radio frequency window and simultaneously perform timing estimation on the SSB of the Tcell to obtain the second timing deviation.

[0101] Step S505: Update the target timing deviation using the second timing deviation.

[0102] For example, if the second timing deviation is marked as TO1, then T_ACC_TO = T_ACC_TO + TO1 = TO1.

[0103] The communication method of this application embodiment can accurately predict and locate the radio frequency window for receiving the MIB in the SI of the Tcell without switching the first timing system of the Scell, and receive the MIB within the radio frequency window. It can achieve accurate positioning and reception of the MIB while keeping the original first timing system of the Scell ​​unchanged.

[0104] As one possible implementation method, Figure 6 A flowchart illustrating another communication method provided for an exemplary embodiment of this application.

[0105] It should be noted that this communication method can be executed alone, or it can be executed together with any embodiment or possible implementation in the embodiments of this application, or it can be executed together with any technical solution in the related technology. The embodiments of this application do not limit this.

[0106] like Figure 6 As shown, the communication method may include the following steps S601 to S604:

[0107] Step S601: In response to the data to be received including SIBi in the SI of the target cell, determine the second offset of the radio frequency window based on the sum of the most recently updated target timing deviation and the first offset.

[0108] Where i is a positive integer, and the target timing deviation is the cumulative timing deviation measured during the terminal's reading of the SI of the Tcell.

[0109] In this embodiment of the application, when the data to be received by the terminal this time includes SIBi in the SI of the Tcell, the sum of the most recently updated target timing deviation and the first offset can be used as the second offset of the radio frequency window for receiving SIBi.

[0110] For example, if the data to be received this time includes SIB1 in SI, the most recently updated target timing offset T_ACC_TO = TO1, and the second offset of the RF window used to receive SIB1 = Rx_offset + TO1.

[0111] If the data to be received includes SIB2 in SI, the most recently updated target timing offset T_ACC_TO = TO1 + TO2, and the second offset of the RF window used to receive SIB1 (e.g., marked Rx_offset1) = Rx_offset + TO1 + TO2. Here, TO2 is the timing offset obtained by the terminal synchronously estimating the timing of SSB when receiving SIB1.

[0112] If the data to be received includes SIB3 in SI, the most recently updated target timing offset T_ACC_TO = TO1 + TO2 + TO3, and the second offset of the RF window used to receive SIB3 (e.g., marked Rx_offset2) = Rx_offset + TO1 + TO2 + TO3. Here, TO3 is the timing offset obtained by the terminal synchronously estimating the timing of SSB when receiving SIB2.

[0113] Similarly, if the data to be received includes SIBi in SI, the most recently updated target timing deviation T_ACC_TO = TO1 + TO2 + ... + TOi, and the second offset of the RF window used to receive SIBi (e.g., denoted as Rx_offseti) = Rx_offset + TO1 + TO2 + ... + TOi. Here, TOi is the timing deviation obtained by the terminal synchronously estimating the timing of SSB when receiving SIB(i-1).

[0114] In step S602, under the first timing system, RF windowing is performed based on the second offset to obtain the RF window.

[0115] In this embodiment, the terminal can perform radio frequency windowing based on the second offset under the first timing system of Scell ​​to obtain a radio frequency window for receiving SIBi.

[0116] For example, the RF windowing position can be determined based on the second offset and the frame header position of the fourth subframe. Here, SIBi is transmitted in the third subframe under the second timing system, and the fourth subframe is the subframe in which the frame header position of the third subframe is mapped to the mapped position obtained under the first timing system.

[0117] by Figure 4 For example, assuming the data to be received includes SIB1, and the RF window length is one subframe, then the third and fourth subframes are both subframe 5. Under the first timing architecture, RF windowing can be performed in subframe 5 with an offset of Rx_offset1. That is, RF windowing is performed at a time-domain position Rx_offset1 away from the frame header of subframe 5, so that SIB1 can be received within this RF window. Where Rx_offset1 = Rx_offset + T_ACC_TO = Rx_offset + TO1.

[0118] In step S603, SIBi is received within the radio frequency window, and timing estimation of SSB is performed synchronously to obtain the third timing deviation.

[0119] The third timing deviation is used to characterize the timing deviation between the SSB currently received by the terminal and the air interface of the target cell.

[0120] In this embodiment of the application, the terminal can receive SIBi within the radio frequency window and simultaneously perform timing estimation on the SSB of the Tcell to obtain the third timing deviation.

[0121] Step S604: Use the third timing offset to update the target timing offset that was last updated.

[0122] For example, if the third timing deviation is marked as TO(i+1), then T_ACC_TO = T_ACC_TO + TO(i+1).

[0123] The communication method of this application embodiment can accurately predict and locate the radio frequency window of SIBi in the SI of Tcell without switching the first timing system of Scell, and receive SIBi within the radio frequency window. It can achieve accurate location and reception of SIBi while keeping the original first timing system of Scell ​​unchanged.

[0124] As one possible implementation method, taking the cell reselection scenario as an example, Figure 7 A flowchart illustrating another communication method provided for an exemplary embodiment of this application.

[0125] It should be noted that this communication method can be executed alone, or it can be executed together with any embodiment or possible implementation in the embodiments of this application, or it can be executed together with any technical solution in the related technology. The embodiments of this application do not limit this.

[0126] like Figure 7 As shown, the communication method may include the following steps S701 to S703:

[0127] Step S701: Determine the second offset of the radio frequency window based on the first offset and the target timing deviation; wherein, the target timing deviation is the cumulative timing deviation measured during the pre-reading of system messages before initiating cell reselection in idle mode.

[0128] The first offset is used to characterize the temporal position deviation caused by mapping the Master Information Block (MIB) in the system message of the target cell to the first timing architecture of the serving cell.

[0129] Step S702: Determine the radio frequency window from the first timing system based on the second offset, so as to receive system messages within the radio frequency window.

[0130] It should be noted that the explanations of steps S701 to S702 can be found in the relevant descriptions in any embodiment of this application, and will not be repeated here.

[0131] As an application scenario, taking cell reselection as an example, the technical solution provided in this application has at least the following advantages: avoiding the terminal's frequent switching of timing systems between Scell / Tcell, reducing the operation of the GlobalTimer timer device, and simplifying the underlying control; finely tracking the timing deviation of Tcell can effectively improve the decoding success rate of the SI before cell reselection and improve the success rate of cell reselection.

[0132] In other words, before a terminal initiates cell reselection in idle mode, in order to improve the success rate of reselection to the target cell, it will generally perform SI pre-reading of the target cell. Only after the SI pre-reading is successful can the terminal officially reselect to the target cell.

[0133] The initial timing information of the target cell comes from neighboring cell measurements. Since SI pre-reading continues for a period of time and neighboring cell measurements are periodic, the neighboring cell measurement information (or neighboring cell timing information) may be from earlier measurements, making it difficult to accurately reflect the real-time timing deviation between the current Tcell and Scell. Therefore, during the pre-reading of the Tcell's SI, timing tracking and processing of the target cell need to be performed based on the initial neighboring cell measurement information to ensure the decoding performance of the Tcell's SI and improve the Tcell's reselection success rate. The Tcell is a cell with a timing system completely independent of the Scell, and its timing adjustment control is a complex issue.

[0134] In this application, T_ACC_TO can first be defined as the cumulative timing deviation estimated from multiple timings of Tcell during the reselection pre-read process. By applying it to the RF window position during SI reception of Tcell, the timing accuracy of Tcell's SI reception process can be achieved. The specific process mainly includes the following steps:

[0135] 1. Before reselecting a T-cell and reading the T-cell's SI, initialize T_ACC_TO = 0.

[0136] 2. Based on neighboring cell measurement information, obtain the 10ms timing offset between the reselected Tcell and the current Scell.

[0137] 3. Under the first timing architecture of Scell, based on the timing offset, calculate the time-domain position of Tcell's MIB in the second timing architecture of Tcell and its mapping position in the first timing architecture, and determine Rx_offset based on this mapping position. For example... Figure 4 As shown, the mapping position is located in subframe 1 under the first timing system of Scell, and the mapping position is offset from the frame header position of subframe 1 by Rx_offset.

[0138] 4. Under the first timing system of Scell, radio frequency windowing is performed with offset Rx_offset in subframe 1 to complete the MIB data reception of Tcell, and timing estimation based on SSB is performed to obtain timing deviation TO1.

[0139] 5. Update T_ACC_TO = T_ACC_TO + TO1.

[0140] 6. Before the next SI reception of Tcell, update its RF window offset Rx_offset1 = Rx_offset + T_ACC_TO. In this way, by modifying the RF window position of Tcell data reception, the timing estimation deviation value of the previous time is eliminated, ensuring the timing accuracy of Tcell data reception this time.

[0141] 7. Repeat the above operation until the SI reading of Tcell ends. Assuming that the timing deviation estimated by timing the SSB of Tcell for the i-th time is TOi, refresh T_ACC_TO = T_ACC_TO + TOi, and refresh the RF window offset Rx_offseti = Rx_offset + T_ACC_TO for the next Tcell SI reception.

[0142] It should be noted that the above strategy is not only applicable to the timing control of cell reselection scenarios, but also to the timing control of SI reading process in other Tcell scenarios (such as manual network search cells, CGI cells). This application embodiment does not limit this.

[0143] Step S703: Based on the received system message, initiate the reselection process for the target cell.

[0144] In the embodiments of this application, the terminal can initiate a reselection process for the target cell based on the received or pre-read SI.

[0145] The communication method in this application embodiment can effectively improve the decoding success rate of the pre-read SI before cell reselection by finely tracking the cumulative timing deviation of Tcell, thereby improving the reselection success rate of the target cell.

[0146] To implement the above embodiments, this application also proposes a communication device.

[0147] Figure 8 This is a schematic diagram of the structure of a communication device provided for an exemplary embodiment of this application.

[0148] like Figure 8 As shown, the communication device 800 may include a first determining module 810 and a receiving module 820.

[0149] The first determining module 810 is used to determine the second offset of the radio frequency window based on the first offset and the target timing deviation; wherein the first offset is used to characterize the time-domain position deviation generated by mapping the main information block (MIB) in the system message of the target cell to the first timing architecture of the serving cell; the target timing deviation is the cumulative timing deviation measured during the reading of the system message;

[0150] The receiving module 820 is used to determine a radio frequency window from the first timing system based on a second offset, so as to receive system messages within the radio frequency window.

[0151] In one implementation of this application, the first offset is obtained using the following module:

[0152] The second determining module is used to determine the first timing deviation between the target cell and the serving cell based on the neighboring cell measurement information;

[0153] The mapping module is used to map the time-domain position of the MIB in the second timing system of the target cell to the first timing system based on the first timing deviation, so as to obtain the mapped position;

[0154] The third determining module is used to determine the first offset based on the mapping position.

[0155] In one implementation of this application, the MIB is transmitted in the first subframe under the second timing system, and the time domain position includes the frame header position of the first subframe; the third determining module is used to: determine the frame header position of the second subframe where the mapping position is located under the first timing system; and determine a first offset based on the position offset between the mapping position and the frame header position of the second subframe.

[0156] In one implementation of this application, in response to the data to be received including MIB, a first determining module 810 is used to: initialize the target timing deviation; and determine a second offset based on the sum of the initialized target timing deviation and the first offset.

[0157] In one implementation of this application, the receiving module 820 is configured to: perform radio frequency windowing based on a second offset under a first timing system to obtain a radio frequency window; receive the MIB within the radio frequency window and synchronously perform timing estimation on the synchronization signal block SSB associated with the MIB to obtain a second timing deviation; and update the target timing deviation using the second timing deviation.

[0158] In one implementation of this application, the data to be received includes a system message block SIBi, where i is a positive integer; the first determining module 810 is used to: determine a second offset based on the sum of the most recently updated target timing deviation and the first offset.

[0159] In one implementation of this application, the receiving module 820 is configured to: perform radio frequency windowing based on a second offset under a first timing system to obtain a radio frequency window; receive SIBi within the radio frequency window and synchronously perform timing estimation on SSB to obtain a third timing deviation; and use the third timing deviation to update the target timing deviation updated most recently.

[0160] In one implementation of this application, the target timing deviation is the cumulative timing deviation measured during the pre-reading of system messages before initiating cell reselection in idle mode; the communication device 800 further includes:

[0161] The initiation module is used to initiate the reselection process of the target cell based on the received system messages.

[0162] It should be noted that the explanation of the communication method embodiment executed by the terminal described above also applies to the communication device of this embodiment, and will not be repeated here.

[0163] In the communication device of this application embodiment, the first offset is used to characterize the time-domain position deviation of the Tcell's MIB in its own timing system mapped to the Scell's timing system (i.e., the first timing system). The target timing deviation is the cumulative timing deviation measured by the terminal during the reading of the Tcell's SI. Based on these two offsets, the offset of the radio frequency window is comprehensively determined, enabling the terminal to accurately predict and locate the radio frequency window for receiving SI without switching the Scell's first timing system, and to receive the Tcell's SI within that radio frequency window. This not only achieves accurate positioning and reception of the Tcell's SI while maintaining the original Scell's first timing system unchanged, avoiding the increased control complexity, hardware resource consumption, and frequent Global Timer operations caused by frequent timing system switching in related technologies, significantly reducing the terminal's underlying scheduling burden, but also, since the radio frequency window is dynamically adjusted based on the actual measured cumulative timing deviation, its time alignment accuracy is higher, thereby improving the SI reception quality and decoding success rate. Especially in scenarios with multipath propagation, high mobility, or significant interference, this refined time compensation mechanism can effectively improve the robustness and stability of SI reading.

[0164] To implement the above embodiments, this application also proposes a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the communication method as described in any of the foregoing embodiments.

[0165] Figure 9This is a schematic diagram of the structure of a terminal provided for an exemplary embodiment of this application. For example, the terminal 900 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, etc.

[0166] Reference Figure 9 Terminal 900 may include one or more of the following components: processing component 902, memory 904, power component 906, multimedia component 908, audio component 910, input / output (I / O) interface 912, sensor component 914, and communication component 916.

[0167] Processing component 902 typically controls the overall operation of terminal 900, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 902 may include one or more processors 920 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 902 may include one or more modules to facilitate interaction between processing component 902 and other components. For example, processing component 902 may include a multimedia module to facilitate interaction between multimedia component 908 and processing component 902.

[0168] Memory 904 is configured to store various types of data to support operation on terminal 900. Examples of this data include instructions for any application or method operating on terminal 900, contact data, phonebook data, messages, pictures, videos, etc. Memory 904 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0169] Power component 906 provides power to various components of terminal 900. Power component 906 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to terminal 900.

[0170] Multimedia component 908 includes a screen that provides an output interface between the terminal 900 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a Touch Panel, the screen may be implemented as a touchscreen to receive input signals from the user. The Touch Panel includes one or more touch sensors to sense touches, swipes, and gestures on the Touch Panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 908 includes a front-facing camera and / or a rear-facing camera. When the terminal 900 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0171] Audio component 910 is configured to output and / or input audio signals. For example, audio component 910 includes a microphone (MIC) configured to receive external audio signals when terminal 900 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 904 or transmitted via communication component 916. In some embodiments, audio component 910 also includes a speaker for outputting audio signals.

[0172] I / O interface 912 provides an interface between processing component 902 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0173] Sensor assembly 914 includes one or more sensors for providing status assessments of various aspects of terminal 900. For example, sensor assembly 914 can detect the on / off state of terminal 900, the relative positioning of components such as the display and keypad of terminal 900, changes in the position of terminal 900 or a component of terminal 900, the presence or absence of user contact with terminal 900, the orientation or acceleration / deceleration of terminal 900, and temperature changes of terminal 900. Sensor assembly 914 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 914 may also include an optical sensor, such as a complementary metal-oxide-semiconductor (CMOS) or charge-coupled device (CCD) image sensor, for use in imaging applications. In some embodiments, sensor assembly 914 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0174] Communication component 916 is configured to facilitate wired or wireless communication between terminal 900 and other devices. Terminal 900 can access wireless networks based on communication standards, such as WiFi, 4G, or 5G, or combinations thereof. In one exemplary embodiment, communication component 916 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 916 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be based on Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra-Wideband (UWB), Bluetooth, and other technologies.

[0175] In an exemplary embodiment, terminal 900 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0176] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 904 including instructions, which can be executed by a processor 920 of a terminal 900 to complete the above method. For example, the non-transitory computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), magnetic tape, floppy disk, and optical data storage device, etc.

[0177] To implement the above embodiments, this application also proposes a chip, wherein the chip includes an interface circuit and a processing circuit coupled to each other. The interface circuit is used to input or output signals, and the processing circuit is configured to perform the communication method provided in any of the foregoing embodiments.

[0178] Figure 10 This is a schematic diagram of the structure of a chip proposed in an exemplary embodiment of this application. See also... Figure 10 The diagram shown is a schematic representation of the structure of chip 1000, but it is not limited to this.

[0179] Chip 1000 includes processing circuit 1001, which is configured to perform any of the above communication methods.

[0180] In some embodiments, the chip 1000 further includes one or more interface circuits 1002. Optionally, the interface circuit 1002 is connected to the memory 1003, and the interface circuit 1002 can be used to receive signals from the memory 1003 or other devices, and the interface circuit 1002 can be used to send signals to the memory 1003 or other devices. For example, the interface circuit 1002 can read instructions stored in the memory 1003 and send the instructions to the processing circuit 1001.

[0181] In some embodiments, the interface circuit 1002 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processing circuit 1001 performs other steps.

[0182] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0183] In some embodiments, chip 1000 further includes one or more memories 1003 for storing instructions. Optionally, all or part of the memories 1003 may be located outside of chip 1000.

[0184] To implement the above embodiments, this application also proposes a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the communication method as described in any of the foregoing method embodiments.

[0185] To implement the above embodiments, this application also proposes a computer program product having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the communication method as described in any of the foregoing method embodiments.

[0186] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0187] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0188] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0189] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-including system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and compact disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0190] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0191] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0192] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0193] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A communication method, characterized in that, include: A second offset of the radio frequency window is determined based on the first offset and the target timing deviation; wherein, the first offset is used to characterize the time-domain position deviation generated by mapping the main information block (MIB) in the system message of the target cell to the first timing architecture of the serving cell; the target timing deviation is the cumulative timing deviation measured during the reading of the system message; The radio frequency window is determined from the first timing system based on the second offset, so as to receive the system message within the radio frequency window; The MIB is received within the radio frequency window, and the timing of the synchronization signal block SSB associated with the MIB is estimated synchronously to obtain the second timing deviation. The target timing deviation is updated using the second timing deviation; The method further includes initializing the target timing deviation in response to the data to be received, including the Master Information Block (MIB).

2. The method according to claim 1, characterized in that, The first offset is obtained using the following steps: Based on neighboring cell measurement information, a first timing deviation between the target cell and the serving cell is determined; Based on the first timing deviation, the time domain position of the MIB in the second timing system of the target cell is mapped to the first timing system to obtain the mapped position; The first offset is determined based on the mapped position.

3. The method according to claim 2, characterized in that, The MIB is transmitted in the first subframe under the second timing system, and the time domain position includes the frame header position of the first subframe; Determining the first offset based on the mapped position includes: Determine the frame header position of the second subframe where the mapping position is located under the first timing system; The first offset is determined based on the positional offset between the mapped position and the frame header position of the second subframe.

4. The method according to claim 1, characterized in that, In response to the data to be received including the MIB, determining the second offset of the RF window based on the first offset and the target timing deviation includes: The second offset is determined based on the sum of the initialized target timing deviation and the first offset.

5. The method according to claim 1, characterized in that, The data to be received in response to this request includes system message block SIBi, where i is a positive integer; The step of determining the second offset of the radio frequency window based on the first offset and the target timing deviation includes: The second offset is determined based on the sum of the most recently updated target timing deviation and the first offset.

6. The method according to claim 5, characterized in that, The step of determining the radio frequency window from the first timing system based on the second offset, so as to receive the system message within the radio frequency window, includes: Under the first timing system, radio frequency windowing is performed based on the second offset to obtain the radio frequency window; The SIBi is received within the radio frequency window, and the timing of the SSB is estimated synchronously to obtain the third timing deviation; The target timing deviation is updated again using the third timing deviation.

7. The method according to any one of claims 1-6, characterized in that, The target timing deviation is the cumulative timing deviation measured during the process of pre-reading the system messages before initiating cell reselection in idle mode; The method further includes: Based on the received system message, initiate the reselection process for the target cell.

8. A communication device, characterized in that, include: The first determining module is used to determine a second offset of the radio frequency window based on the first offset and the target timing deviation; wherein, the first offset is used to characterize the time-domain position deviation generated by mapping the main information block (MIB) in the system message of the target cell to the first timing architecture of the serving cell; the target timing deviation is the cumulative timing deviation measured during the reading of the system message; The receiving module is configured to determine the radio frequency window from the first timing system based on the second offset, so as to receive the system message within the radio frequency window; receive the MIB within the radio frequency window, and synchronously perform timing estimation on the synchronization signal block SSB associated with the MIB to obtain a second timing deviation; and update the target timing deviation using the second timing deviation. In response to the data to be received including the Master Information Block (MIB), the first determining module is also used to initialize the target timing deviation.

9. The apparatus according to claim 8, characterized in that, The first offset is obtained using the following module: The second determining module is used to determine the first timing deviation between the target cell and the serving cell based on the neighboring cell measurement information; The mapping module is used to map the time domain position of the MIB in the second timing system of the target cell to the first timing system based on the first timing deviation, so as to obtain the mapped position; The third determining module is used to determine the first offset based on the mapped position.

10. The apparatus according to claim 8, characterized in that, In response to the data to be received including the MIB, the first determining module is configured to: The second offset is determined based on the sum of the initialized target timing deviation and the first offset.

11. The apparatus according to claim 8, characterized in that, The data to be received in response to this request includes system message block SIBi, where i is a positive integer; The first determining module is used for: The second offset is determined based on the sum of the most recently updated target timing deviation and the first offset.

12. The apparatus according to claim 11, characterized in that, The receiving module is used for: Under the first timing system, radio frequency windowing is performed based on the second offset to obtain the radio frequency window; The SIBi is received within the radio frequency window, and the timing of the SSB is estimated synchronously to obtain the third timing deviation; The target timing deviation is updated again using the third timing deviation.

13. A terminal, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the steps of the method as described in any one of claims 1 to 7.

14. A non-transitory computer-readable storage medium storing computer program instructions thereon, characterized in that, When executed by a processor, the program instructions implement the steps of the method according to any one of claims 1 to 7.

15. A chip, characterized in that, The chip includes an interface circuit and a processing circuit that are coupled to each other. The interface circuit is used to input or output signals, and the processing circuit is used to implement the method of any one of claims 1 to 7.

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