A signal transmission method and related equipment

Abstract

This application discloses a signal transmission method and related equipment for signal enhancement when there are significant distance differences between a terminal device and different network devices. The method includes: determining a timing deviation between the enhancing network device and the main network device; the timing deviation is used by the main network device to send the target signal to the terminal device at intervals before or after the enhancing network device sends the target signal, thereby enhancing the target signal.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and more particularly to a signal transmission method and related equipment. Background Technology

[0002] In wireless communication technology, signal enhancement can be achieved through single-frequency network (SFN) technology. SFN technology enables multiple network devices to transmit the same signal on the same frequency band at the same time, thereby achieving signal superposition and enhancement at the terminal device.

[0003] When multiple network devices are far apart, the significant differences in distance between the terminal device and different network devices result in large time differences in the signals received by the terminal device from different network devices. If this time difference exceeds the length of the cyclic prefix (CP), the terminal device may simultaneously receive signals sent by the network devices at different moments. In this situation, not only is signal enhancement not achieved, but signal interference may also occur. Summary of the Invention

[0004] This application provides a signal transmission method and related equipment for signal enhancement when there are significant differences in distance between a terminal device and different network devices.

[0005] In a first aspect, embodiments of this application provide a signal transmission method, including:

[0006] Determine the timing deviation between the enhancement network device and the main network device; this timing deviation is used by the main network device to send the target signal to the terminal device before or after the enhancement network device sends the target signal, at intervals of this timing deviation, so as to achieve the superposition of the target signal at the terminal device, thereby enhancing the target signal.

[0007] In this embodiment, by having the enhanced network device and the main network device send the same target signal with a timing deviation, the time difference between the target signals from the enhanced network device and the main network device reaching the terminal device can be reduced. By reasonably setting the timing deviation, this time difference can be controlled within the CP length, thereby avoiding signal interference and achieving signal enhancement.

[0008] In one alternative implementation, the primary network device is the device that allows the terminal device to access the communication network (typically the network device closest to the terminal device). The coverage area of ​​the enhancement network device is much larger than that of the primary network device, and the primary network device is closer to the terminal device than the enhancement network device.

[0009] In one optional implementation, the method is applied to a primary network device; after the primary network device determines the timing deviation between the enhanced network device and the primary network device, the method further includes: the primary network device shifting its original time axis forward or backward by the timing deviation to obtain a target time axis; wherein the original time axis is aligned with the time axis of the enhanced network device; and the primary network device sending a target signal according to the target time axis.

[0010] In this embodiment of the application, after the main network device determines the timing deviation, it adjusts the time axis to change the transmission time of the target signal. Since the timing deviation is determined by the main network device itself, it is not necessary to obtain the timing deviation through additional signaling, thus reducing the occupation of communication resources.

[0011] In one optional implementation, the method is applied to a control device; after the control device determines the timing deviation between the enhanced network device and the main network device, the method further includes: the control device sending a control signaling message to the main network device, the control signaling message including the timing deviation, the control signaling message being used to instruct the main network device to shift its original time axis forward or backward by the timing deviation to obtain a target time axis, so that the main network device sends a target signal according to the target time axis; wherein, the original time axis is aligned with the time axis of the enhanced network device.

[0012] In this embodiment, the control device can operate independently of the enhanced network device and the main network device. The actions of determining timing deviation and sending control signaling are performed by the control device. The enhanced network device and the main network device only need to send the target signal according to the control signaling, which requires minimal modification to the enhanced network device and the main network device. Furthermore, the enhanced network device and the main network device do not need to determine timing deviation through calculation or other means, thus requiring less computing and storage resources from the enhanced network device and the main network device.

[0013] In one optional implementation, the timing deviation is R / c or a correction result of R / c; where R is the signal transmission distance between the enhanced network device and the main network device, r is the cell radius of the main network device, and c is the speed of light.

[0014] In this embodiment, the time difference between the terminal device receiving signals from the enhanced network device and receiving signals from the main network device is estimated by using the quotient of the signal transmission distance R and the speed of light c, i.e., the signal transmission time between the enhanced network device and the main network device. The calculation result is relatively accurate.

[0015] However, the positional relationship between the terminal device, the main network device, and the enhancement network device may affect the signal transmission path from the enhancement network device to the terminal device and the signal transmission path from the main network device to the terminal device. This may cause the actual time difference between the signal received by the terminal device from the enhancement network device and the signal received by the main network device from the terminal device to the terminal device to be different from R / c. Therefore, R / c needs to be appropriately corrected, and the result of the R / c correction is used as the timing deviation to obtain a better signal enhancement effect.

[0016] In one alternative implementation, the main network device is divided into two categories according to the sector orientation: 1) facing away from the enhancement network device, and 2) facing the enhancement network device. If the sector orientation of the main network device is facing away from the enhancement network device, the timing deviation is R / c.

[0017] In one alternative implementation, the main network device is divided into two categories according to sector orientation: 1) facing away from the enhancement network device, and 2) facing the enhancement network device; such as Figure 5b As shown, if the vector pointing from the primary network device to the enhanced network device is the reference vector, then when the angle between the sector direction of the primary network device and the reference vector is less than 90° (i.e., the sector direction of the primary network device falls within the light gray area in the figure), the primary network device is considered to be facing the enhanced network device; when the angle between the sector direction of the primary network device and the reference direction is greater than 90° (i.e., the sector direction of the primary network device falls within the dark gray area in the figure), the primary network device is considered to be facing away from the enhanced network device. The type of facing or facing away when the angle is equal to 90° is not limited here. If the sector direction of the primary network device is facing the enhanced network device, the timing deviation is the correction result of R / c. For example, the correction result of R / c can be (R-2r) / c. In this type of configuration, if the timing deviation is set to R / c, the closer the terminal device is to the master device, the smaller the time difference between the target signals sent by the enhancement network device and the master network device reaching the terminal device, resulting in better signal superposition. If the terminal device is located at the cell boundary of the master network device, the time difference between the target signals reaching the terminal device is the largest, resulting in the weakest signal superposition. However, the signal received by the master network device from the terminal device is the weakest when the terminal device is located at the cell boundary. Therefore, the signal of the terminal device located at the cell boundary should be enhanced the most. Through the above corrections, the farther the terminal device is from the master device, the smaller the time difference between the target signals sent by the enhancement network device and the master network device reaching the terminal device, resulting in better signal superposition and improved channel quality for users at the cell edge.

[0018] The sector orientation of the main network device can be any angle. Besides classifying main network devices into two main categories—those facing the enhancement network device or those facing away from the enhancement network device—in this embodiment, the main network devices can also be classified more finely according to sector orientation. For example, ... Figure 5bAs shown, based on the angle between the sector direction of the main network device and the reference vector, it is divided into four categories: 0° (facing the enhancement network device), 60°, 120°, and 180° (facing away from the enhancement network device), or even more categories. This is not limited here. The main network device type corresponding to different sector directions corresponds to different correction formulas, which are not limited here either.

[0019] In one optional implementation, the step of determining the timing deviation between the enhanced network device and the main network device may specifically include: determining the signal transmission distance R between the enhanced network device and the main network device based on the transmission duration of the reference signal between the enhanced network device and the main network device; and determining the timing deviation based on the signal transmission distance R.

[0020] In this embodiment, since the transmission of the target signal may be affected by the transmission path, by referencing the transmission time of the signal between the enhanced network device and the main network device, the signal transmission distance R on the actual path from the enhanced network device to the main network device can be determined more accurately. Based on this R, a timing deviation that better matches the actual transmission path of the signal can be calculated, which can more accurately reduce the time difference between the signals from the enhanced network device and the main network device reaching the terminal device, resulting in a better signal enhancement effect.

[0021] In one alternative implementation, the method is performed by the main network device, and the reference signal is sent from the enhanced network device to the main network device.

[0022] In this embodiment, multiple master network devices can exist. The enhancement network device can broadcast a reference signal (this reference signal is not sent to the terminal devices). Multiple master network devices can receive this reference signal and subsequently determine the transmission duration from the reference signal to their respective network devices, determine the signal transmission distance R based on the transmission duration, determine the timing deviation based on the signal transmission distance R, and then send the target signal at intervals corresponding to the timing deviation. Therefore, by sending a reference signal, the enhancement network device can simultaneously achieve time correction for multiple master network devices with a single transmission of the reference signal.

[0023] In one optional implementation, the step of determining the timing deviation between the enhanced network device and the primary network device may specifically include: acquiring the location information of the enhanced network device and the primary network device; determining the spatial distance R' between the enhanced network device and the primary network device based on the location information, and using the spatial distance R' as an estimate of the signal transmission distance R between the enhanced network device and the primary network device; and determining the timing deviation based on the signal transmission distance R. Optionally, the estimate of the signal transmission distance R may also be equal to R' + λ, where λ is the error of the spatial distance R' relative to the signal transmission distance R. Optionally, λ may be an empirical value or an estimated value, which is not limited here.

[0024] In this embodiment, the spatial distance R' between the enhanced network device and the main network device is determined by acquiring their location information, and the estimated value of the signal transmission distance R is determined, thereby determining the timing deviation. Since the location information can be easily obtained through methods such as the Global Positioning System (GPS) and BeiDou, the process of determining the timing deviation is simple and convenient, does not require complex calculations or data interaction, and is highly efficient.

[0025] In one alternative implementation, the enhanced network equipment includes a broadcast tower.

[0026] In this embodiment of the application, since the broadcast tower has a large signal coverage area and high signal strength, the signal of the main network device is enhanced through the broadcast tower, and the signal enhancement effect is good.

[0027] In one alternative implementation, the number of main network devices is multiple.

[0028] In this embodiment of the application, the signal enhancement of multiple main network devices can be achieved by one enhancement network device, which reduces the number of network devices required for signal enhancement and thus reduces the communication resources occupied by signal enhancement.

[0029] In one alternative implementation, the target signal includes a broadcast signal or a multicast signal.

[0030] In this embodiment of the application, if the broadcast or multicast content to be sent by different main network devices is the same, the different main network devices can use the same broadcast signal or multicast signal as the target signal and send the same target signal through an enhancement network device to enhance the signal of multiple main network devices, thereby reducing the communication resources occupied by signal enhancement.

[0031] In the embodiments of this application, the target signal may also be a unicast signal, which is not limited here.

[0032] Secondly, embodiments of this application provide a signal transmission method, including: an enhanced network device sending a target signal to a terminal device, wherein the target signal is the same as the target signal sent by the main network device to the terminal device, and the target signal does not include a synchronization signal and PBCH block (SSB).

[0033] In an alternative implementation, the method may further include: enhancing the network device to send a reference signal, which is used by each of the plurality of master network devices to determine a timing deviation.

[0034] In one alternative implementation, the target signal includes a broadcast signal or a multicast signal. Alternatively, the target signal may also be a unicast signal; this is not a limitation.

[0035] Thirdly, embodiments of this application provide a main network device, including a processor, a memory, and a communication interface. The memory is used to store instructions, and the processor is used to invoke the instructions to cause the main network device to perform the signal transmission method as described in the first aspect.

[0036] Fourthly, embodiments of this application provide a control device, including a processor, a memory, and a communication interface. The memory is used to store instructions, and the processor is used to invoke the instructions to cause the control device to perform the signal transmission method as described in the first aspect.

[0037] Fifthly, embodiments of this application provide an enhanced network device, including a processor, a memory, and a communication interface. The memory is used to store instructions, and the processor is used to invoke the instructions to cause the control device to perform the signal transmission method as described in the second aspect.

[0038] In a sixth aspect, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed, implements the method described in the first or second aspect.

[0039] In a seventh aspect, embodiments of this application provide a computer program product comprising: computer program code, which, when executed, implements the method described in the first or second aspect.

[0040] The beneficial effects of aspects two through seven are described in aspect one, and are not limited here. Attached Figure Description

[0041] Figure 1 A network architecture diagram of the signal transmission method provided in the embodiments of this application;

[0042] Figure 2 A flowchart of a signal transmission method provided in an embodiment of this application;

[0043] Figure 3 A schematic diagram of a signal transmission method provided in an embodiment of this application;

[0044] Figure 4 This is a schematic diagram of the timing deviation in an embodiment of this application;

[0045] Figure 5a This is another schematic diagram of the timing deviation in the embodiments of this application;

[0046] Figure 5bThis is a schematic diagram illustrating the type of main network device in the embodiments of this application;

[0047] Figure 6 Another flowchart of the signal transmission method provided in the embodiments of this application;

[0048] Figure 7 This is a rendering of the signal transmission method provided in an embodiment of this application;

[0049] Figure 8 A structural diagram of the main network device provided in the embodiments of this application;

[0050] Figure 9 A structural diagram of the control device provided in the embodiments of this application;

[0051] Figure 10 A structural diagram of the enhanced network device provided in the embodiments of this application;

[0052] Figure 11 This is a structural diagram of the chip provided in an embodiment of this application. Detailed Implementation

[0053] This application provides a signal transmission method and related equipment for signal enhancement when there are significant differences in distance between a terminal device and different network devices.

[0054] Please see Figure 1 , Figure 1 This is a schematic diagram of the network architecture for the signal transmission method provided in this application embodiment. The architecture includes an enhancement network device, a main network device, and a terminal device. The terminal device is simultaneously within the signal coverage range of both the enhancement network device and the main network device. The main network device is used to send a target signal to the terminal device. The enhancement network device is used to send the same target signal to the terminal device to enhance the target signal.

[0055] Optionally, the architecture may also include a control device for controlling the time difference between the enhanced network device and the main network device in sending the target signal, so as to ensure that the target signal is enhanced at the terminal device.

[0056] It is worth noting that, Figure 1 This is merely an example of a network architecture, which may include additional main network devices for transmitting the same or different target signals; no limitation is made here.

[0057] Optionally, the enhanced network equipment can be a broadcast tower, or other network equipment such as a mobile communication base station or signal tower; there are no restrictions here.

[0058] Optionally, the main network equipment can be a mobile communication base station. In addition to mobile communication base stations, it can also be a small station, a macro station, etc. There are no restrictions here.

[0059] In this embodiment of the application, the coverage area of ​​the enhanced network device is greater than that of the main network device; and the coverage area of ​​the enhanced network device may include the coverage area of ​​one or more main network devices. For example, when the enhanced network device is a broadcast tower, the main network device may be a mobile communication base station.

[0060] For ease of description, mobile communication base stations will be referred to as base stations in the following text.

[0061] Optionally, the terminal device can be a mobile wireless access device, such as a mobile phone, or a personal digital assistant (PDA); or, the terminal device can be a fixed wireless access device, such as a computer, a smart playback device (e.g., a smart TV), a new radio (NR) router, etc., without limitation.

[0062] Figure 1 The network architecture shown can be used to implement Single Frequency Network (SFN) technology. SFN technology enhances the signal by having multiple network devices transmit the same signal at the same time and on the same frequency band. When the distance between the terminal and different network devices varies significantly, the time difference between the signals received by the terminal from different devices can be large. If this time difference exceeds the cyclic prefix (CP) length, the terminal may simultaneously receive signals transmitted by both the enhancing network device and the primary network device from different moments. In this case, not only will signal enhancement not be achieved, but signal interference may also occur.

[0063] To address the aforementioned shortcomings, this application provides a signal transmission method for enhancing signals when the distance between network devices is significant. The method described below uses a broadcast tower as the enhancing network device and a base station as the main network device to illustrate the method provided in this application. It is important to note that this embodiment is merely an example and does not limit the type or number of enhancing and main network devices. The base station (main network device) is the device by which a terminal device accesses the communication network. Theoretically, the main network device is the network device closest to the terminal device; therefore, generally, the distance between the terminal device and the base station is less than the distance between the terminal device and the broadcast tower.

[0064] Please see Figure 2 The signal transmission method provided in this application includes:

[0065] 201. The main network device determines the timing deviation between the enhancement network device and the main network device. The timing deviation is used by the main network device to send the target signal to the terminal device at intervals before or after the enhancement network device sends the target signal to the terminal device, thereby enhancing the target signal.

[0066] In this embodiment, because the distance between the enhanced network device and the terminal device is different from the distance between the main network device and the terminal device, the enhanced network device and the main network device send target signals at the same time, and the terminal device receives the signals from the two network devices at different times.

[0067] Therefore, to ensure that the target signals emitted by the enhancement network device and the main network device arrive at the terminal device as simultaneously as possible, the main network device determines a timing deviation between the enhancement network device and the main network device. This timing deviation is used by the main network device to send the target signal to the terminal device at intervals before or after the enhancement network device sends the target signal, thereby reducing the time difference in the terminal device's reception of target signals from different network devices and thus enhancing the target signal.

[0068] Please see Figure 3 By setting a timing offset, ideally, target signals from both the enhancement network device and the main network device can arrive at the terminal device simultaneously. Different network devices transmit target signals at the same frequency domain location (e.g., the same resource block (RB)). Figure 3 As shown, the enhanced network equipment may include a broadcast tower, and the main network equipment may include base station 1 and base station 2. The broadcast tower is used to enhance the signal of base station 1 and base station 2.

[0069] Please see Figure 4 , Figure 4 This is a schematic diagram of a signal transmission method provided in an embodiment of this application. Figure 4 As shown, based on Figure 3 In the scenario shown, the distance between base station 1 (main network device) and the broadcast tower (enhanced network device) is R1, and the distance between base station 2 (main network device) and the broadcast tower (enhanced network device) is R2. Therefore, base station 1 can determine the timing deviation between itself and the broadcast tower as Δt1 = R1 / c, and base station 2 can determine the timing deviation between itself and the broadcast tower as Δt2 = R2 / c.

[0070] Optionally, in this embodiment, the main network device can be a base station device for the terminal device to access the wireless communication network, the terminal device receives signals from the main network device, and the enhancement network device serves as a signal enhancement device for the main network device.

[0071] Optionally, in the embodiments of this application, the timing deviation can be R / c or the correction result of R / c; where R is the signal transmission distance between the enhanced network device and the main network device, r is the cell radius of the main network device, and c is the speed of light.

[0072] Please see Figure 5a If the sector direction of the target base station (main network equipment) faces away from the broadcast tower (enhanced network equipment), that is, the sector of the target base station is... Figure 5a In cell 2, the timing deviation can be Δt' = R / c; if the sector direction of the target base station (main network equipment) is directly opposite the broadcast tower (enhanced network equipment), that is, the sector of the target base station is... Figure 5a In cell 1, the timing deviation can be the result of the correction of R / c, specifically Δt=(R-2r) / c.

[0073] It is worth noting that the above correction result Δt=(R-2r) / c is only an example of a correction result and does not impose any limitations. The correction result can also be Δt=R / c+λ (λ is the correction value), etc., which is not limited here.

[0074] Optionally, in this embodiment of the application, the signal transmission distance R between the enhanced network device and the main network device can be determined in a variety of ways. For example, the enhanced network device can send a reference signal, and after the main network device receives the reference signal, it can determine the signal transmission distance R between the enhanced network device and the main network device based on the measured transmission time of the reference signal between the enhanced network device and the main network device.

[0075] Optionally, in addition to using the reference signal, the main network device can also determine R in other ways. For example, the main network device can obtain the location information of the enhancement network device and the main network device; and determine the spatial distance R' between the enhancement network device and the main network device based on the location information, and use this as an estimate of the signal transmission distance R.

[0076] 202. The main network device shifts its original time axis forward or backward by a timing deviation to obtain the target time axis; wherein the original time axis is aligned with the time axis of the enhancement network device.

[0077] Each network device has its own timeline. The primary network device has a primary timeline that is aligned with the timeline of the enhancement network device. Based on the primary timeline, the primary network device sends signals to the terminal device simultaneously with the enhancement device. However, due to differences in the distance between the terminal device and the enhancement network device, as well as between the terminal device and the primary network device, the primary network device's signal may arrive at the terminal device earlier or later than the signal sent by the enhancement network device.

[0078] Once the timing deviation is determined, the main network device can shift the original time axis forward or backward by the timing deviation to obtain the target time axis.

[0079] Optionally, if the determined timing deviation is greater than 0, the main network device will shift the original time axis backward to obtain the target time axis; that is, make the time point on the target time axis later than the corresponding point on the original time axis.

[0080] Optionally, if the determined timing deviation is less than 0, the main network device will shift the original time axis forward to obtain the target time axis. That is, the time point on the target time axis will be earlier than the corresponding point on the original time axis.

[0081] Optional, in Figure 4 In the scenario shown, base station 1 (main network device) determines the timing deviation between itself and the broadcast tower (enhanced network device) to be Δt1 = R1 / c. Then, base station 1 can shift the original time axis backward by Δt1 = R1 / c based on the timing deviation between itself and the broadcast tower. Base station 2 (main network device) determines the timing deviation between itself and the broadcast tower (enhanced network device) to be Δt2 = R2 / c. Then, base station 2 can shift the original time axis backward by Δt2 = R2 / c based on the timing deviation between itself and the broadcast tower.

[0082] 203. The main network device sends the target signal according to the target timeline.

[0083] Based on the above adjustments, the target timeline is obtained, and the main network device can send the target signal according to the target timeline.

[0084] When a target signal needs to be transmitted, the primary network device transmits the target signal "simultaneously" with the enhanced network device based on the offset target timeline. Here, "simultaneously" means that from the perspective of the target timeline, they are transmitted simultaneously; however, because the target timeline in this application embodiment is offset forward or backward by a timing deviation, this "simultaneity" will have a timing deviation in actual time. The primary network device will transmit the target signal earlier or later than the enhanced network device by the duration of the timing deviation.

[0085] The enhanced network device also sends the same target signal "simultaneously". As can be seen from the above explanation of "simultaneously", since the target time axis of the main network device is shifted forward or backward by the duration of the timing deviation, there is a timing deviation between the time when the enhanced network device and the main network device send the target signal in real time.

[0086] In this embodiment, by sending the target signal with a timing deviation between the enhanced network device and the main network device, the time difference between the target signal from the enhanced network device and the main network device and its arrival at the terminal device can be reduced. By reasonably setting the timing deviation, this time difference can be controlled within the CP length, thereby avoiding signal interference and achieving signal enhancement.

[0087] In this embodiment of the application, in addition to the timing deviation being determined by the main network device, the timing deviation can also be determined by other devices, such as enhancement network devices or control devices. Figure 1 (The control device shown is illustrated below). The following example illustrates the method for determining timing deviation using the control device:

[0088] Please see Figure 6 The method includes:

[0089] 601. The control device determines the timing deviation between the enhancement network device and the main network device; the timing deviation is used by the main network device to send the target signal to the terminal device at intervals before or after the enhancement network device sends the target signal to the terminal device, thereby enhancing the target signal.

[0090] See step 601. Figure 2 The difference in step 201 shown is that the execution entity is changed from the main network device to the control device. Optionally, the control device can obtain information such as the transmission duration of the reference signal from the main network device or the enhanced network device.

[0091] 602. The control device sends control signaling to the main network device. The control signaling includes timing deviation.

[0092] Once the control device determines the timing deviation, it can send control signaling to the main network device, which includes the timing deviation.

[0093] 603. The main network device shifts its original time axis forward or backward by a timing deviation according to the control signaling to obtain the target time axis; wherein the original time axis is aligned with the time axis of the enhancement network device.

[0094] 604. The main network device sends the target signal according to the target timeline.

[0095] See steps 603 and 604. Figure 2 Steps 202 and 203 shown will not be repeated here. The difference is that the timing deviation in step 202 is determined by the main network device itself, while the timing deviation in step 603 is obtained by the main network device through control signaling.

[0096] Please see Figure 7 Based on the above Figures 2 to 6The signal transmission method shown can reduce the time difference between target signals from different network devices at the terminal device. For example... Figure 7 As shown, the main network device is the network device closest to the terminal device, that is, the network device through which the terminal device accesses the communication network. Figure 7 The distance between base stations in the system is 500m, therefore in Figure 7 (In this context, the terminal device and the main network device it accesses can be approximated as the same point.) Figure 7 The color of each position represents the time difference between the signal received by the terminal device from the main network device and the same signal sent by other network devices arriving at the terminal device, when there are other network devices at that position (not the main network device to which the user is connected, and the other network device also determines the timing deviation based on the broadcast tower and offsets the local time axis based on the timing deviation).

[0097] Depend on Figure 7 It is known that before the introduction of timing bias, the farther the enhancement network device is from the main network device (terminal device), the greater the time difference. When timing bias is introduced, this time difference can be significantly reduced, and the geographical range of 4.7μs (CP length) can be expanded. That is, the range of enhancement network devices (broadcast towers and / or the aforementioned other network devices) where the terminal device can effectively enhance its signal is expanded. Other network devices in this range can also simultaneously enhance the signal of the terminal device.

[0098] The methods provided in the embodiments of this application have been described above. The devices provided in the embodiments of this application will be described next.

[0099] Please see Figure 8 This application provides a main network device 800, including a processor 801 and a memory 802, wherein the processor 801 is coupled to the memory 802;

[0100] Memory 802 is used to store programs;

[0101] Processor 801 is configured to execute the program in memory 802, causing processor 801 to perform the aforementioned... Figures 2 to 6 The steps performed by the main network device in any embodiment realize the corresponding signal transmission method.

[0102] Please see Figure 9 This application provides a control device 900, including a processor 901 and a memory 902, wherein the processor 901 is coupled to the memory 902;

[0103] Memory 902 is used to store programs;

[0104] Processor 901 is configured to execute the program in memory 902, causing processor 901 to perform the aforementioned... Figure 6 The steps executed by the control device are used to achieve the corresponding signal transmission method.

[0105] Please see Figure 10 This application provides an enhanced network device 1000, including a processor 1001 and a memory 1002, wherein the processor 1001 is coupled to the memory 1002;

[0106] Memory 1002 is used to store programs;

[0107] Processor 1001 is configured to execute the program in memory 1002, causing processor 1001 to perform the aforementioned... Figures 2 to 6 In any embodiment, the steps performed by the network device are enhanced to achieve the corresponding signal transmission method.

[0108] Please see Figure 11 This application provides a chip 1100, which includes at least one processor 1101 and a communication interface 1102. The communication interface 1102 and the at least one processor 1101 are interconnected via a line. The at least one processor 1101 is used to run computer programs or instructions to perform the aforementioned functions. Figures 2 to 6 The signal transmission method corresponding to any of the embodiments.

[0109] The communication interface 1102 in the chip can be an input / output interface, pins, or circuits, etc.

[0110] In one possible implementation, the chip 1100 described above in this application further includes at least one memory 1103, which stores instructions. The memory 1103 can be an internal storage unit of the chip, such as a register, cache, etc., or it can be a storage unit of the chip (e.g., read-only memory, random access memory, etc.).

[0111] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0112] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0113] 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 units can be selected to achieve the purpose of this embodiment according to actual needs.

[0114] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0115] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes 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 this application. 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.

Claims

1. A signal transmission method, characterized in that, The method includes: Determine the timing deviation between the enhancement network device and the main network device; the timing deviation is used by the main network device to send the target signal to the terminal device at intervals before or after the enhancement network device sends the target signal to the terminal device, thereby enhancing the target signal; the timing deviation is R / c or a correction result of R / c; where R is the signal transmission distance between the enhancement network device and the main network device, and c is the speed of light.

2. The method according to claim 1, characterized in that, The method is applied to the primary network device, and after determining the timing deviation between the enhanced network device and the primary network device, the method further includes: The main network device shifts its original time axis forward or backward by the timing deviation to obtain a target time axis; wherein the original time axis is aligned with the time axis of the enhanced network device. The main network device sends the target signal according to the target time axis.

3. The method according to claim 1, characterized in that, The method is applied to a control device, and after determining the timing deviation between the enhanced network device and the main network device, the method further includes: A control signaling message is sent to the main network device. The control signaling message includes the timing deviation. The control signaling message is used to instruct the main network device to shift its original time axis forward or backward by the timing deviation to obtain a target time axis, so that the main network device can send the target signal according to the target time axis; wherein the original time axis is aligned with the time axis of the enhancement network device.

4. The method according to claim 1, characterized in that, If the sector direction of the primary network device is opposite to that of the enhanced network device, then the timing deviation is R / c.

5. The method according to claim 1, characterized in that, If the sector direction of the main network device is directly opposite the enhanced network device, the timing deviation is R / c or (R-2r) / c, where (R-2r) / c is the correction result of R / c; and r is the cell radius of the main network device.

6. The method according to any one of claims 1 to 5, characterized in that, The determination of timing deviation between the enhanced network device and the main network device includes: The signal transmission distance R between the enhanced network device and the main network device is determined based on the transmission time of the reference signal between the enhanced network device and the main network device. The timing deviation is determined based on the signal transmission distance R.

7. The method according to claim 6, characterized in that, The method is executed by the main network device, and the reference signal is sent by the enhanced network device to multiple main network devices.

8. The method according to any one of claims 1 to 5, characterized in that, The determination of timing deviation between the enhanced network device and the main network device includes: Obtain the location information of the enhanced network device and the main network device; The spatial distance R' between the enhanced network device and the main network device is determined based on the location information; The spatial distance R' is used as an estimate of the signal transmission distance R; The timing deviation is determined based on the signal transmission distance R.

9. The method according to any one of claims 1 to 5, characterized in that, The enhanced network equipment includes broadcast towers.

10. The method according to claim 9, characterized in that, The main network device is a mobile communication base station.

11. The method according to any one of claims 1 to 5, characterized in that, The target signal includes broadcast signals or multicast signals.

12. A signal transmission method, characterized in that, The method includes: The enhanced network device sends a target signal to the terminal device, the target signal being the same as the target signal sent by the main network device to the terminal device, and the target signal not including a synchronization signal block (SSB). Before or after the enhanced network device sends the target signal to the terminal device, the main network device sends the target signal to the terminal device at a timing deviation, wherein the timing deviation is R / c or a correction result of R / c; where R is the signal transmission distance between the enhanced network device and the main network device, and c is the speed of light.

13. The method according to claim 12, characterized in that, The method further includes: The enhanced network device sends a reference signal, which is used by each of the plurality of master network devices to determine the timing deviation.

14. The method according to claim 12 or 13, characterized in that, The target signal includes broadcast signals or multicast signals.

15. A main network device, characterized in that, It includes a processor, a memory, and a communication interface, wherein the memory is used to store instructions, and the processor is used to invoke the instructions to cause the main network device to perform the signal transmission method as described in any one of claims 1 to 11.

16. A control device, characterized in that, It includes a processor, a memory, and a communication interface, wherein the memory is used to store instructions, and the processor is used to invoke the instructions to cause the control device to perform the signal transmission method as described in any one of claims 1 to 11.

17. An enhanced network device, characterized in that, It includes a processor, a memory, and a communication interface, wherein the memory is used to store instructions, and the processor is used to invoke the instructions to cause the main network device to perform the signal transmission method as described in any one of claims 12 to 14.

18. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed, implements the method as described in any one of claims 1 to 14.

19. A computer program product, the computer program product comprising: Computer program code, when the computer program code is run, implements the method as described in any one of claims 1 to 14.

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