Signal transmission method, device, equipment and readable storage medium

Abstract

The present invention provides a signal transmission method, device, equipment and readable storage medium, which relate to the field of communication technology, in order to solve the problem that the signal strength of signals of the same strength after being transmitted through leaky cables of different types is quite different in practice, resulting in unstable signals at the terminal. The method includes receiving a baseband signal sent by a base station based on an antenna port of a radio frequency remote unit; performing signal processing on the baseband signal based on the radio frequency remote unit to obtain at least two sub-radio frequency signals; and transmitting the at least two sub-radio frequency signals corresponding to the at least two leaky cables. The present invention can make the signal strength transmitted to the terminal by each leaky cable equal, thereby improving the stability of the terminal signal.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a signal transmission method, device, equipment and readable storage medium. Background Art

[0002] Due to the unique architectural features of tunnels, network coverage solutions for tunnel scenarios generally use leaky cable coverage. When different types of leaky cables are deployed in tunnels, the signal strength of the same signal after being transmitted through different types of leaky cables varies greatly, making the signals radiated by different leaky cables received by the terminal unbalanced, resulting in unstable signals at the terminal, such as slow file download speeds. Summary of the invention

[0003] The embodiments of the present invention provide a signal transmission method, device, equipment and readable storage medium. In current practical applications, when different types of leaky cables are deployed in a tunnel, the signal strength of signals of the same strength after being transmitted through different types of leaky cables varies greatly, resulting in an imbalance in the signals radiated by different leaky cables received by the terminal, causing the terminal's signal to be unstable.

[0004] In order to solve the above problems, the embodiments of the present invention adopt the following technical solutions:

[0005] In a first aspect, an embodiment of the present invention provides a signal transmission method, which is applied to a tunnel transmission system, wherein the tunnel transmission system includes at least two leaky cables deployed in a target closed place, and a radio remote unit, wherein the at least two leaky cables are connected to the radio remote unit via a feeder, and the method includes:

[0006] Receiving a baseband signal sent by a base station based on an antenna port of the radio remote unit;

[0007] Based on the radio remote unit, signal processing is performed on the baseband signal to obtain at least two sub-radio signals, where the at least two sub-radio signals correspond one to one to the at least two leaky cables;

[0008] The at least two sub-RF signals corresponding to the at least two leaky cable transmissions are used.

[0009] Optionally, the baseband signal includes at least two different sub-baseband signals, and signal processing is performed on the baseband signal based on the radio remote unit to obtain at least two sub-radio frequency signals, including:

[0010] Processing the at least two different sub-baseband signals based on the radio remote unit to obtain at least two radio frequency signal groups, wherein the at least two radio frequency signal groups respectively include at least two sub-radio frequency signals;

[0011] The at least two sub-RF signals corresponding to the at least two leaky cable transmissions include:

[0012] The at least two sub-RF signals in each RF signal group are transmitted based on the at least two leaky cables.

[0013] Optionally, the signal strengths of the at least two different sub-baseband signals are the same.

[0014] Optionally, signal strengths of the at least two sub-RF signals are the same.

[0015] Optionally, after transmitting the at least two sub-RF signals corresponding to the at least two leaky cables, the method further includes:

[0016] The at least two sub-RF signals are transmitted to a terminal based on the at least two leaky cables, and the terminal is located in the target closed place.

[0017] Optionally, the radio remote unit further includes a radio frequency channel antenna port, and the at least two sub-radio frequency signals corresponding to the transmission based on the at least two leaky cables include:

[0018] Transmitting the at least two sub-RF signals to the corresponding at least two leaky cables based on the RF channel antenna port;

[0019] The at least two sub-RF signals corresponding to the transmission of the at least two leaky cables are based on the at least two sub-RF signals corresponding to the transmission of one leaky cable.

[0020] In a second aspect, an embodiment of the present invention provides a signal transmission device, the device comprising:

[0021] A receiving module, used for receiving a baseband signal sent by a base station;

[0022] A processing module, configured to perform signal processing on the baseband signal to obtain at least two sub-RF signals, wherein the at least two sub-RF signals correspond one to one to at least two leaky cables;

[0023] A transmission module is used to transmit the corresponding at least two sub-RF signals based on the at least two leaky cables.

[0024] Optionally, the baseband signal includes at least two different sub-baseband signals, and the processing module includes:

[0025] A processing unit, configured to process the at least two different sub-baseband signals to obtain at least two radio frequency signal groups, wherein the at least two radio frequency signal groups respectively include at least two sub-radio frequency signals;

[0026] The transmission module comprises:

[0027] A transmission unit is configured to transmit the at least two sub-RF signals in each RF signal group based on the at least two leaky cables.

[0028] In a third aspect, an embodiment of the present invention provides a signal transmission device, the device comprising: a transceiver, a memory, a processor, and a program stored in the memory and executable on the processor;

[0029] The processor is used to read the program in the memory to implement the steps in the method described in the first aspect.

[0030] In a fourth aspect, an embodiment of the present invention provides a readable storage medium for storing a program, wherein the program, when executed by a processor, implements the steps in the method described in the first aspect.

[0031] In an embodiment of the present invention, the signal transmission method can perform signal processing on the baseband signal through the radio frequency remote unit to obtain the at least two sub-RF signals, and transmit the corresponding at least two sub-RF signals through the at least two leaky cables, so that the baseband signal can be transmitted through the at least two leaky cables, and the gain and loss between each baseband signal are the same, so that the signal strength transmitted to the terminal by each leaky cable is equal, which can improve the stability of the terminal signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0033] Figure 1 This is one of the flow charts of a signal transmission method provided by an embodiment of the present invention;

[0034] Figure 2 This is a second schematic diagram of a signal transmission method provided by an embodiment of the present invention;

[0035] Figure 3 It is one of the structural diagrams of a signal transmission device provided by an embodiment of the present invention;

[0036] Figure 4 This is the second structural diagram of a signal transmission device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0039] See also Figure 1 , Figure 1 A flow chart of a signal transmission method provided in an embodiment of the present invention is applied to a tunnel transmission system, wherein the tunnel transmission system comprises at least two leaky cables deployed in a target closed place, and a radio remote unit, wherein the at least two leaky cables are connected to the radio remote unit via a feeder, such as Figure 1 As shown, the method includes:

[0040] Step 101: receiving a baseband signal sent by a base station based on an antenna port of the radio remote unit.

[0041] The tunnels include high-speed rail tunnels, subway tunnels, highway tunnels, etc.; the radio frequency remote unit can be a device that converts baseband optical signals into radio frequency signals at the remote end, amplifies and transmits them, and can be a 2-channel, 4-channel, 8-channel RRU (Remote Radio Unit) type; the antenna port can be a logical port for transmission, and can be an Antenna Port port inside the RRU, and the channel conditions experienced by data sent from the same Port port are the same; the base station can be a public mobile communication base station, that is, an interface device for mobile devices to access the Internet; the baseband signal can be an original electrical signal that has not been modulated and is emitted by the signal source, that is, the base station.

[0042] Step 102: Process the baseband signal based on the radio remote unit to obtain at least two sub-radio signals, where the at least two sub-radio signals correspond to the at least two leaky cables in a one-to-one manner.

[0043] The at least two sub-RF signals may be obtained by modulating the baseband signal; the RF signal may be a modulated radio wave having a certain transmission frequency; the leaky cable may be a cable for transmitting various data information, and the at least two leaky cables may be two leaky cables of different models, such as a 13 / 8" leaky cable and a 5 / 4" leaky cable.

[0044] Step 103: Transmit the at least two corresponding sub-RF signals based on the at least two leaky cables.

[0045] The at least two sub-RF signals corresponding to the at least two leaky cables may be transmitted by leaky cables of different types.

[0046] In an embodiment of the present invention, the signal transmission method can perform signal processing on the baseband signal through the radio frequency remote unit to obtain the at least two sub-RF signals, and transmit the corresponding at least two sub-RF signals through the at least two leaky cables, so that the baseband signal can be transmitted through the at least two leaky cables, and the gain and loss between each baseband signal are the same, so that the signal strength transmitted to the terminal by each leaky cable is equal, which can improve the stability of the terminal signal.

[0047] Optionally, the baseband signal includes at least two different sub-baseband signals, and signal processing is performed on the baseband signal based on the radio remote unit to obtain at least two sub-radio frequency signals, including:

[0048] Processing the at least two different sub-baseband signals based on the radio remote unit to obtain at least two radio frequency signal groups, wherein the at least two radio frequency signal groups respectively include at least two sub-radio frequency signals;

[0049] The at least two sub-RF signals corresponding to the at least two leaky cable transmissions include:

[0050] The at least two sub-RF signals in each RF signal group are transmitted based on the at least two leaky cables.

[0051] The at least two different sub-baseband signals may be baseband signals with different signal contents, and the at least two RF signal groups respectively correspond to the at least two different sub-baseband signals, that is, after any sub-baseband signal of the at least two different sub-baseband signals is processed, at least two sub-RF signals are obtained to form a corresponding RF signal group; the at least two sub-RF signals in each RF signal group transmitted by the at least two leaky cables may be a sub-RF signal corresponding to each RF signal group transmitted by each leaky cable.

[0052] In an embodiment of the present invention, the signal transmission method can transmit different signal data by transmitting different sub-baseband signals. After the terminal such as the terminal receives the signal, the different data is merged and decoded to distinguish the MIMO (multiple input multiple output) effect of multiple streams, thereby improving the download rate of the terminal user.

[0053] Optionally, the signal strengths of the at least two different sub-baseband signals are the same.

[0054] The signal strengths of the at least two different sub-baseband signals being the same may mean that the signal powers of the at least two different sub-baseband signals are the same.

[0055] In an embodiment of the present invention, the signal transmission method can receive and transmit different baseband signals with the same signal strength. The path characteristics of the signals transmitted by multiple channels in a multi-stream scenario in spatial propagation are very similar, so that the channel quality between the multiple streams is also very close. Therefore, when the system determines the downlink modulation and coding method, the multiple streams can jointly execute a unified modulation and coding scheme.

[0056] Optionally, signal strengths of the at least two sub-RF signals are the same.

[0057] The at least two sub-RF signals have the same signal strength, and may be at least two sub-RF signals obtained by equally dividing the baseband signal. In an embodiment of the present invention, the signal transmission method transmits sub-RF signals with the same signal strength, so that the signal level values ​​of different channels, i.e., different leaky cables, are better balanced.

[0058] Optionally, after transmitting the at least two sub-RF signals corresponding to the at least two leaky cables, the method further includes:

[0059] The at least two sub-RF signals are transmitted to a terminal based on the at least two leaky cables, and the terminal is located in the target closed place.

[0060] The terminal may be a terminal, a computer or other equipment.

[0061] In an embodiment of the present invention, the signal transmission method can transmit the baseband signal to the terminal. Since each sub-RF signal is transmitted to the terminal through the at least two leaky cables, the gain and loss between the baseband signals are the same, so that the signal strength transmitted to the terminal by each leaky cable is equal, which can improve the balance of the signal level value and make the MIMO effect of the terminal better.

[0062] Optionally, the radio remote unit further includes a radio frequency channel antenna port, and the at least two sub-radio frequency signals corresponding to the transmission based on the at least two leaky cables include:

[0063] Transmitting the at least two sub-RF signals to the corresponding at least two leaky cables based on the RF channel antenna port;

[0064] The at least two sub-RF signals corresponding to the transmission of the at least two leaky cables are based on the at least two sub-RF signals corresponding to the transmission of one leaky cable.

[0065] The RF channel antenna port may be a port for processing and sending RF signals. In an embodiment of the present invention, the signal transmission method may transmit sub-RF signals of each baseband signal through the RF channel antenna port, and the signals transmitted by each RF channel antenna port are the same, so that after the baseband signal is transmitted through different leaky cables, the signal strength remains consistent, thereby improving the stability of the terminal receiving the signal.

[0066] See also Figure 2 , Figure 2 A schematic diagram of a signal transmission method provided by an embodiment of the present invention is shown as follows: Figure 2 As shown, PORT is the antenna port of the radio remote unit, which is mapped to perform signal processing on the baseband signal. The antenna port is the radio frequency channel antenna port. For example, the signal transmitted by PORT0 is a, the signal transmitted by PORT1 is b, the signal transmitted by PORT2 is c, and the signal transmitted by PORT3 is d. After one-to-many mapping between PORT and the radio frequency channel antenna port, the signal of the radio frequency channel antenna port is expressed as follows:

[0067]

[0068] The signals transmitted by the four RF channel antenna ports are the same, that is, the signals transmitted by antenna port 1, antenna port 2, antenna port 3 and antenna port 4 are all

[0069] h n Including all gains and losses during channel transmission, the channel model of the signals at the antenna ports of the four RF channels after being transmitted through the leaky cable can be expressed as:

[0070]

[0071] That is, when the powers of baseband signals a, b, c, and d are equal, the signal strengths transmitted to the terminal through each leaky cable are equal.

[0072] The embodiment of the present invention provides a signal transmission device 300, such as Figure 3 As shown, the device comprises:

[0073] The receiving module 301 is used to receive a baseband signal sent by a base station;

[0074] A processing module 302 is used to perform signal processing on the baseband signal to obtain at least two sub-RF signals, where the at least two sub-RF signals correspond to at least two leaky cables in a one-to-one manner;

[0075] The transmission module 303 is configured to transmit the corresponding at least two sub-RF signals based on the at least two leaky cables.

[0076] Optionally, the baseband signal includes at least two different sub-baseband signals, and the processing module 302 includes:

[0077] A processing unit, configured to process the at least two different sub-baseband signals to obtain at least two radio frequency signal groups, wherein the at least two radio frequency signal groups respectively include at least two sub-radio frequency signals;

[0078] The transmission module 303 includes:

[0079] A transmission unit is configured to transmit the at least two sub-RF signals in each RF signal group based on the at least two leaky cables.

[0080] Optionally, the signal strengths of the at least two different sub-baseband signals are the same.

[0081] Optionally, signal strengths of the at least two sub-RF signals are the same.

[0082] Optionally, the device further comprises:

[0083] A sending module is used to transmit the at least two sub-RF signals to a terminal based on the at least two leaky cables, and the terminal is located in the target closed place.

[0084] Optionally, the radio remote unit further includes a radio frequency channel antenna port, and the transmission module includes:

[0085] A first transmission unit, configured to transmit the at least two sub-RF signals to the corresponding at least two leaky cables based on the RF channel antenna port;

[0086] The second transmission unit is configured to transmit the at least two corresponding sub-RF signals based on the at least two leaky cables, wherein one leaky cable transmits one corresponding sub-RF signal.

[0087] The embodiment of the present invention provides a signal transmission device, such as Figure 4As shown, the resource scheduling device includes: a transceiver 401, a memory 402, a processor 400, and a program stored in the memory and executable on the processor:

[0088] The transceiver 401 receives the baseband signal sent by the base station;

[0089] The processor 400 is used to read the program in the memory 402 and execute the following steps:

[0090] Processing the baseband signal to obtain at least two sub-RF signals, wherein the at least two sub-RF signals correspond to at least two leaky cables in a one-to-one manner;

[0091] The transceiver 401 transmits the corresponding at least two sub-RF signals.

[0092] Among them, Figure 4 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 400 and memory represented by memory 402. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 401 may be a plurality of components, namely, a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. The processor 400 is responsible for managing the bus architecture and general processing, and the memory 402 may store data used by the processor 400 when performing operations.

[0093] Optionally, the signal strengths of the at least two different sub-baseband signals are the same.

[0094] Optionally, signal strengths of the at least two sub-RF signals are the same.

[0095] Optionally, the transceiver 401 is further used to: transmit the at least two sub-RF signals to a terminal, where the terminal is located in the target closed place.

[0096] Optionally, the transceiver 401 is further used for:

[0097] Transmitting the at least two sub-RF signals to the corresponding at least two leaky cables;

[0098] The at least two sub-RF signals corresponding to the transmission of the at least two leaky cables are based on the at least two sub-RF signals corresponding to the transmission of one leaky cable.

[0099] An embodiment of the present invention further provides a readable storage medium for storing a program, wherein the program can be executed by a processor to implement various processes of the embodiment of the above method, and its implementation principle and technical effect are similar. To avoid repetition, this embodiment will not be described here.

[0100] In the several embodiments provided by the present invention, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0101] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0102] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the sending and receiving method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0103] The above is a preferred embodiment of the present invention. It should be pointed out that the protection scope of the present invention is not limited thereto. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A signal transmission method, applied to a tunnel transmission system, wherein the tunnel transmission system comprises at least two leaky cables of different types deployed in a target closed place, and a radio remote unit, wherein the at least two leaky cables are connected to the radio remote unit via a feeder, wherein: The method comprises: Receiving a baseband signal sent by a base station based on an antenna port of the radio remote unit; Establishing a correlation model based on the baseband signal and the at least two leaky cables of different models; The association model ensures that the signal strength of the baseband signal remains consistent after being transmitted through the at least two leaky cables of different models; Based on the association model, signal processing is performed on the baseband signal in a radio remote unit to obtain at least two sub-radio signals, where the at least two sub-radio signals correspond one-to-one to the at least two leaky cables; The at least two sub-RF signals corresponding to the at least two leaky cable transmissions are used.

2. The method according to claim 1, characterized in that The baseband signal includes at least two different sub-baseband signals, and the baseband signal is processed based on the radio remote unit to obtain at least two sub-radio frequency signals, including: Processing the at least two different sub-baseband signals based on the radio remote unit to obtain at least two radio frequency signal groups, wherein the at least two radio frequency signal groups respectively include at least two sub-radio frequency signals; The at least two sub-RF signals corresponding to the at least two leaky cable transmissions include: The at least two sub-RF signals in each RF signal group are transmitted based on the at least two leaky cables.

3. The method according to claim 2, characterized in that The signal strengths of the at least two different sub-baseband signals are the same.

4. The method according to claim 1, characterized in that: The signal strengths of the at least two sub-RF signals are the same.

5. The method according to claim 1, characterized in that: After transmitting the at least two sub-RF signals corresponding to the at least two leaky cables, the method further includes: The at least two sub-RF signals are transmitted to a terminal based on the at least two leaky cables, and the terminal is located in the target closed place.

6. The method according to claim 1, characterized in that The radio remote unit further includes a radio frequency channel antenna port, and the at least two sub-radio frequency signals corresponding to the transmission based on the at least two leaky cables include: Transmitting the at least two sub-RF signals to the corresponding at least two leaky cables based on the RF channel antenna port; The at least two sub-RF signals corresponding to the transmission of the at least two leaky cables are based on the at least two sub-RF signals corresponding to the transmission of one leaky cable.

7. A signal transmission device, characterized in that: The device comprises: A receiving module, used for receiving a baseband signal sent by a base station; A processing module, configured to perform signal processing on the baseband signal to obtain at least two sub-RF signals, wherein the at least two sub-RF signals correspond one to one to at least two leaky cables; A transmission module, configured to transmit the at least two corresponding sub-RF signals based on the at least two leaky cables of different models; The signal transmission device is also used for: Establishing a correlation model based on the baseband signal and the at least two leaky cables of different models; The association model ensures that the signal strength of the baseband signal remains consistent after being transmitted through the at least two leaky cables of different models; The baseband signal is processed in a radio remote unit based on the association model to obtain at least two sub-radio signals, and the at least two sub-radio signals correspond one-to-one to the at least two leaky cables.

8. The device according to claim 7, characterized in that The baseband signal includes at least two different sub-baseband signals, and the processing module includes: A processing unit, configured to process the at least two different sub-baseband signals to obtain at least two radio frequency signal groups, wherein the at least two radio frequency signal groups respectively include at least two sub-radio frequency signals; The transmission module comprises: A transmission unit is configured to transmit the at least two sub-RF signals in each RF signal group based on the at least two leaky cables.

9. A signal transmission device, comprising: A transceiver, a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that: The processor is used to read the program in the memory to implement the steps in any one of the methods according to claims 1 to 6.

10. A readable storage medium for storing a program, characterized in that: When the program is executed by a processor, the steps in the method according to any one of claims 1 to 6 are implemented.

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