A high-speed rail digital room splitting device, a high-speed rail signal coverage system and method

Abstract

The application provides a high-speed rail digital room distribution device, a high-speed rail signal coverage system and a method, and belongs to the technical field of communication. The high-speed rail digital room distribution device comprises: a plurality of groups of wireless bearing modules, each group of wireless bearing modules is used for receiving radio frequency signals transmitted by a base station of an operator in a downlink, and generating corresponding digital signals, the operators connected by each group of wireless bearing modules are different, and each group of wireless bearing modules comprises a plurality of wireless bearing modules; a transmission link convergence module is used for converging the digital signals of all links of the plurality of groups of wireless bearing modules and transmitting the digital signals to a distribution module; and the distribution module is used for distributing the digital signals in all converged links to a plurality of carriages of a high-speed rail, so as to cover the plurality of carriages of the high-speed rail with signals. The application aims to improve the effect of high-speed rail signal coverage.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of communication, in particular, relate to a high-speed rail digital room distribution device, a high-speed rail signal coverage system and method. BACKGROUND

[0002] With the development of science and technology, high-speed rail has become one of the important choices for people to travel as a reliable transportation method. Meanwhile, with the wide application of mobile terminals with continuously improved performance, it is necessary to ensure that users can normally use mobile terminals on high-speed trains, for example, improving the mobile Internet rate and high-quality voice of users on high-speed trains has become an important goal of major operators.

[0003] Currently, the coverage mode of high-speed rail mobile communication mainly adopts the "zigzag" type construction of mobile communication base stations along the two sides of the railway, which results in large construction investment of the traditional coverage mode and unsatisfactory coverage effect. SUMMARY

[0004] Embodiments of the present application provide a high-speed rail digital room distribution device, a high-speed rail signal coverage system and method, aiming to improve the effect of high-speed rail signal coverage.

[0005] In a first aspect, embodiments of the present application provide a high-speed rail digital room distribution device, which is applied to high-speed rail, and the high-speed rail digital room distribution device comprises: a plurality of groups of wireless bearer modules, a transmission link aggregation module and a distribution module, wherein:

[0006] Each wireless bearer module in the plurality of groups of wireless bearer modules is configured to receive radio frequency signals transmitted by a base station of an operator in a downlink and generate corresponding digital signals, the operator connected to each wireless bearer module is different, and each wireless bearer module comprises a plurality of wireless bearer modules;

[0007] The transmission link aggregation module is configured to aggregate digital signals of all links of the plurality of groups of wireless bearer modules and transmit the aggregated digital signals to the distribution module;

[0008] The distribution module is configured to distribute the digital signals in all aggregated links to a plurality of carriages of the high-speed rail to cover signals of the plurality of carriages of the high-speed rail.

[0009] In an uplink, the distribution unit receives radio frequency signals in a plurality of carriages of the high-speed rail, and transmits radio frequency signals to base stations of a plurality of operators through the reverse process of the downlink and the plurality of groups of wireless bearer modules.

[0010] Optionally, the antenna of each wireless bearer module in the plurality of groups of wireless bearer modules is installed outside the car body of the high-speed rail.

[0011] Optionally, each wireless bearer module in the group of wireless bearer modules corresponding to the base station of any operator is provided with a card, and the card is signed with the private network slice identifier of the operator.

[0012] Optionally, when the plurality of wireless bearer modules corresponding to the base station of any operator fails, the plurality of wireless bearer modules corresponding to the base station of another operator is switched to for data transmission.

[0013] Optionally, the number of wireless bearer modules contained in each group of wireless bearer modules and the signal transceiving capability are determined by the signal transceiving capability of the antenna of the base station of each operator and / or the bandwidth requirement of the high-speed rail.

[0014] Optionally, the distribution module comprises an indoor baseband processing unit, a branching unit, and a multi-mode digital antenna supporting 4G and 5G dual-mode network signals, wherein each of the plurality of carriages of the high-speed rail is provided with a plurality of multi-mode digital antennas.

[0015] In a second aspect, the embodiments of the present application provide a high-speed rail signal coverage system, comprising the high-speed rail digital room distribution device of the first aspect of the embodiments and a virtual private network core management layer,

[0016] The virtual private network core management layer comprises virtual private networks of a plurality of operators, and in the downlink, different operators transmit radio frequency signals based on their corresponding virtual private networks and base stations provided along the railway.

[0017] The high-speed rail digital room distribution device is configured to receive the radio frequency signals transmitted by the base stations of the different operators and perform signal coverage for the plurality of carriages of the high-speed rail.

[0018] Optionally, the virtual private network core management layer comprises a 5G core network corresponding to each of the plurality of operators, a high-speed rail management control unit, and base stations provided along the high-speed rail corresponding to each of the plurality of operators; wherein the high-speed rail management control unit is configured to configure transmission links of different operators.

[0019] Optionally, the virtual private network core management layer is configured to distribute different suppliers based on 5G slice technology and establish virtual private networks corresponding to each of the different suppliers.

[0020] Optionally, in the virtual private network corresponding to any supplier in the virtual private network core management layer, the flow direction of the slice data stream corresponding to the supplier is determined based on a trained neural network DNN, the bearer network slice of the supplier is built in the STN network based on VPN technology and FlexE, and the 5G quality of service identifier is set in the wireless access network of the supplier.

[0021] Optionally, in the virtual private network core management layer corresponding to any supplier of the virtual private network, the IP address corresponding to the wireless bearer module of the high-speed rail digital room splitting device corresponding to the supplier is determined.

[0022] In a third aspect, the embodiments of the present application provide a high-speed rail digital room splitting method, applied to the high-speed rail digital room splitting device of the first aspect of the embodiments, and the method comprises:

[0023] In the downlink, each group of wireless bearer modules receives the radio frequency signals transmitted by the base stations of the corresponding operators, and generates corresponding digital signals, wherein the operators connected to each group of wireless bearer modules are different, and each group of wireless bearer modules comprises a plurality of wireless bearer modules;

[0024] The transmission link aggregation module aggregates the digital signals of all links of the plurality of groups of wireless bearer modules and transmits them to the distribution module;

[0025] The distribution module distributes the digital signals in all aggregated links to the plurality of carriages of the high-speed rail to perform signal coverage on the plurality of carriages of the high-speed rail;

[0026] In the uplink, the distribution unit receives the radio frequency signals in the plurality of carriages of the high-speed rail, and transmits the radio frequency signals to the base stations of the plurality of operators through the reverse process of the downlink and the plurality of groups of wireless bearer modules.

[0027] Advantages:

[0028] The high-speed rail digital room splitting device provided by the present application is arranged on the high-speed rail. In the downlink, a plurality of groups of wireless bearer modules are used to receive the radio frequency signals transmitted by the base stations of various operators. However, the base stations of one operator correspond to one group of wireless bearer modules, and a plurality of wireless bearer modules in one group of wireless bearer modules receive the radio frequency signals transmitted by the base stations of one operator, which can provide more generous bandwidth. Then, the transmission link aggregation module aggregates the digital signals of all links of the plurality of groups of wireless bearer modules and transmits them to the distribution module. The distribution module distributes the digital signals in all aggregated links to the plurality of carriages of the high-speed rail to perform signal coverage on the plurality of carriages of the high-speed rail.

[0029] In the uplink, the distribution unit receives the radio frequency signals in the plurality of carriages of the high-speed rail, and transmits the radio frequency signals to the base stations of the plurality of operators through the reverse process of the downlink and the plurality of groups of wireless bearer modules.

[0030] In uplink or downlink, the base station of one operator transmits signals with multiple wireless bearer modules, which can not only provide abundant bandwidth, but also can realize load balancing and improve network throughput by dispersing data packets to multiple links for transmission. Meanwhile, when the link where the wireless bearer module of one operator is located fails, the link where the other wireless bearer module of the operator is located can still transmit data, thereby realizing redundancy backup, improving network reliability and signal coverage effect on high-speed rail. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 is a functional module diagram of the high-speed rail digital room distribution device according to an embodiment of the present application;

[0033] Figure 2 is an installation schematic diagram of the high-speed rail digital room distribution device according to an embodiment of the present application;

[0034] Figure 3 is a hardware connection schematic diagram of the high-speed rail digital room distribution device according to an embodiment of the present application;

[0035] Figure 4 is a link schematic diagram of the high-speed rail digital room distribution device according to an embodiment of the present application;

[0036] Figure 5 is a module schematic diagram of the high-speed rail signal coverage system according to an embodiment of the present application;

[0037] Figure 6 is a step flow chart of the high-speed rail digital room distribution method according to an embodiment of the present application. DETAILED DESCRIPTION

[0038] The technical solutions of the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0039] At present, high-speed rail is widely used and becomes one of important choices for people to travel. Meanwhile, with the wide application of mobile terminals with continuously improved performance, it is necessary to ensure normal use of mobile terminals on high-speed trains, for example, to improve the mobile Internet rate and high-quality voice of users on high-speed trains has become an important goal of major operators.

[0040] At present, the coverage mode of high-speed rail mobile communication mainly adopts the "zigzag" type construction of mobile communication base stations along the railway line. However, due to the high penetration loss caused by the high sealing of high-speed trains and the large Doppler frequency offset caused by high-speed driving, the traditional coverage mode construction cost is high, and the coverage effect is not ideal.

[0041] With the emergence of 5G (5th Generation Mobile Communication Technology), how to use 5G, a new generation of broadband mobile communication technology with high speed, low latency and large connection characteristics, to realize wireless coverage demand on high-speed rail is a problem to be solved. Therefore, the embodiment of the application provides a high-speed rail digital room distribution device, which can improve the signal coverage effect of high-speed trains.

[0042] Referring to Figure 1 , a functional module diagram of a high-speed rail digital room distribution device in the embodiment of the application is shown, as Figure 1 indicated, the high-speed rail digital room distribution device is applied to high-speed rail, and the high-speed rail digital room distribution device comprises a plurality of wireless bearing modules, a transmission link aggregation module and a distribution module.

[0043] The wireless bearing module is used for receiving or transmitting radio frequency signals between high-speed rail and base stations along the high-speed rail. The high-speed rail digital room distribution device provided in the embodiment comprises a plurality of wireless bearing modules. Each wireless bearing module in the plurality of wireless bearing modules corresponds to an operator. The operator refers to a supplier of network services. In actual network services, there will be multiple operators. Therefore, a corresponding set of wireless bearing modules can be determined for each operator. The operators connected by each set of wireless bearing modules are different, and each set of wireless bearing modules comprises a plurality of wireless bearing modules.

[0044] In the downlink, the plurality of wireless bearing modules receives radio frequency signals transmitted by base stations of multiple operators respectively. Each wireless bearing module generates a corresponding digital signal after receiving the radio frequency signal. Then, the transmission link aggregation module aggregates digital signals of all links of the plurality of wireless bearing modules, and transmits them to the distribution module. The distribution module distributes the aggregated digital signals in all links to a plurality of carriages of the high-speed rail, so as to perform signal coverage on the plurality of carriages of the high-speed rail.

[0045] In the uplink, the allocation unit receives the radio frequency signals in the multiple carriages of the high-speed train and returns through the reverse process of the downlink, and transmits the radio frequency signals to the base stations of multiple operators through the multiple groups of wireless bearing modules.

[0046] The allocation module includes an indoor baseband processing unit, a shunt unit, and a multi-mode digital antenna supporting 4G and 5G dual-mode network signals. Each carriage of the multiple carriages of the high-speed train is provided with multiple multi-mode digital antennas. The multi-mode digital antennas in each carriage can convert digital signals into radio frequency signals, thereby providing signal coverage for mobile terminals of users in the carriage. In the uplink, the multi-mode digital antennas are used to receive radio frequency signals of mobile terminals in the carriage. By arranging multiple multi-mode digital antennas in each carriage, the signal coverage quality in the carriage can be guaranteed, and when one multi-mode digital antenna fails, other antennas can fill in the signal coverage.

[0047] Since the multi-mode digital antenna supporting 4G and 5G dual-mode network signals is used, the compatibility of the high-speed rail signal coverage network is improved, all operator users are considered, and multi-mode terminal access to the data network for gaming, video, and call service interaction is compatible.

[0048] The high-speed rail digital room device provided by the embodiment can provide wide bandwidth in the uplink and downlink, and multiple link aggregation can disperse data packets for transmission on multiple links, thereby achieving load balancing and improving network throughput.

[0049] Meanwhile, when a link of a wireless bearing module corresponding to an operator fails, the links of other wireless bearing modules corresponding to the operator can still perform data transmission, thereby achieving redundancy backup, improving network reliability, and improving the effect of signal coverage on the high-speed rail.

[0050] Furthermore, each wireless bearing module has its own antenna for receiving and transmitting radio frequency signals. When installing the high-speed rail digital room device, the antenna of each wireless bearing module is installed outside the car body of the high-speed train, which can reduce the high penetration loss caused by the high sealing of the high-speed train and the large Doppler frequency offset caused by high-speed driving, and improve the coding efficiency.

[0051] In practical implementation, the number of carriages covered by a single high-speed rail digital indoor distribution device can be determined. For example, mainstream high-speed trains generally include 8 or 16 carriages. Assuming there are approximately 600 seats in an 8-carriage high-speed train, and operator A holds a 70% market share, then the operator serves approximately 420 mobile terminals in an 8-carriage high-speed train. Therefore, to ensure that each user's network access experience is ≥2Mbps, only one set of high-speed rail digital indoor distribution devices can be installed in an 8-carriage high-speed train, while two sets can be installed in a 16-carriage high-speed train.

[0052] In one feasible implementation, the number and signal transmission / reception capabilities of the wireless bearer modules in a set of wireless bearer modules corresponding to an operator are determined by the signal transmission / reception capabilities of the antennas of each operator's base station and / or the bandwidth requirements of the high-speed rail.

[0053] For example, the widely used high-speed rail signal coverage currently adopts the 8T8R cell networking method, that is, the antenna signal transmission and reception capability of a base station of an operator is 8T8R. Therefore, two wireless bearer modules can be determined for an operator, and the signal transmission and reception capability of each wireless bearer module is 4T4R. However, when the base station of the operator transmits signals with the corresponding two wireless bearer modules, the eight channels of the base station can be utilized to the maximum extent, thereby maximizing the transmission rate.

[0054] Alternatively, after determining the use of wireless bearer modules, the number of wireless bearer modules can be determined based on the bandwidth requirements for high-speed rail signal coverage. For example, when using 4T4R line bearer modules, the bandwidth requirement of the wireless transmission link can be calculated based on the peak rate of the 4T4R cell. The formula for calculating the peak rate is as follows:

[0055]

[0056] In a 4T4R cell, the MIMO (multiple input multiple output) layer has 4 layers, the modulation order is 256QAM (Quadrature Amplitude Modulation), each subcarrier carries 8 bits, there are 273 RBs in a 100M bandwidth, and 12 subcarriers per RB. The resource overhead ratio is 11÷14≈78.57%, the time slot ratio (2.5ms dual cycle) is 7:3, the special time slot ratio is 10:2:2, and the average number of downlink slots transmitted per ms is (5+10*2 / 14) / 5=1.2587. Therefore, the following can be calculated:

[0057] Peak rate = 4 * 273 * 12 * (1.2587 * 14 * 78.57% * 8) * 1000 ≈ 1.5 Gbps

[0058] Similarly, the peak rate of a single LTE (Long Term Evolution) cell can be calculated to be 150Mbps. In order to meet the coverage and capacity requirements of multiple operators at the same time, the high-speed rail digital indoor distribution device needs to support two 100M 5G cells and two 20M LTE cells. The required wireless backhaul bandwidth is 2*1.5G+2*0.15G=3.3Gbps. Therefore, three wireless bearer modules are needed for wireless backhaul. The peak rate of a single 4T4R wireless bearer module is 1.5Gbps. Furthermore, in order to avoid possible module failures and 20% redundancy loss of the air interface, four wireless bearer modules are finally selected to ensure sufficient backhaul bandwidth and disaster recovery backup requirements.

[0059] Reference Figure 2 This document illustrates the installation diagram of the high-speed rail digital indoor distribution device provided in this application embodiment. Taking an 8-car high-speed rail train with two suppliers as an example, a single high-speed rail digital indoor distribution device can provide signal coverage for the 8-car high-speed rail train. Both supplier A and supplier B have 8T8R base stations, so two 4T4R wireless bearer modules can be determined for one operator, which can maximize the use of the 8 channels of the base station. The two operators have a total of 4 4T4R wireless bearer modules, which can be combined into a maximum of 16 streams for backhaul, which can effectively ensure sufficient backhaul bandwidth.

[0060] The four wireless bearer modules are equipped with rooftop antennas. The indoor baseband processing unit (BBU) and splitting unit of the transmission link aggregation module and the distribution module can be installed in the middle of the eight carriages. For example, the transmission link aggregation module can be an aggregation switch, and the splitting unit can be a remote radio unit (RRU).

[0061] Reference Figure 3This document illustrates the hardware connection diagram of the high-speed rail digital indoor distribution device provided in this application embodiment. Specifically, a scheme of "shared RRU-HUB and remote pRRU with local power supply" can be adopted to provide signal coverage inside each carriage. The aggregation switch, BBU, and RRU-HUB are located in the 5th carriage. The aggregation switch is connected to the BBU via optical fiber, and the BBU is connected to the RRU-HUB via optical fiber. Each carriage is equipped with a pRRU, and only the port number of each pRRU and RRU-HUB needs to be configured. The RRU-HUB can be connected to the pRRU in each carriage via a network cable. Each pRRU in the carriage has multiple multimode digital antennas, which can be installed at the top of the carriage. The multimode digital antennas can be installed in the carriage using a ceiling-mounted multimode antenna method.

[0062] Reference Figure 4 The diagram illustrates the link of the high-speed rail digital indoor distribution device provided in this application embodiment, such as... Figure 3 Wireless bearer modules 1 and 2 are connected to the high-speed rail base station of operator A via a wireless link, and wireless bearer modules 3 and 4 are connected to the high-speed rail base station of operator B via a wireless link. Then, wireless bearer modules 1-4 are connected to the on-board BBU after the link is aggregated by the aggregation switch to form sufficient bandwidth. The BBU is connected to the on-board RRU-HUB, and the RRU-HUB is connected to the multi-mode digital antenna in each carriage.

[0063] Reference Figure 5 This illustration shows a schematic diagram of a high-speed rail signal coverage system according to an embodiment of this application. The high-speed rail signal coverage system includes the high-speed rail digital indoor distribution device and the virtual private network core management layer described in this embodiment. The virtual private network core management layer includes virtual private networks of multiple operators. In the downlink, different operators send radio frequency signals to base stations set up along the railway line based on their respective virtual private networks. The high-speed rail digital indoor distribution device is used to receive the radio frequency signals sent by the base stations of the different operators and provide signal coverage for multiple carriages of the high-speed rail.

[0064] In one feasible implementation, the virtual private network core management layer uses 5G slicing technology to distribute traffic to different suppliers and establish virtual private networks corresponding to each supplier. Simply put, slicing technology divides a physical network into N logical networks according to application scenarios, so that the communication channels of each supplier are separated from other suppliers or public networks. The virtual private networks established by each operator through slicing technology have higher communication security, and each virtual private network has better efficiency and stability.

[0065] For example, when constructing a virtual private network for any operator using slicing technology, the direction of the slice data flow corresponding to the supplier can be determined based on a trained neural network (DNN). The anchor point UPF (User Plane Function) of the network makes the IP address assigned to the wireless bearer backhaul module fixed, thereby avoiding service interruption caused by IP address changes when switching between cities and provinces.

[0066] When building the bearer network for any vendor's virtual private network, the vendor's bearer network slices can be built in the STN network based on VPN (Virtual Private Network) technology and FlexE (Flexible Ethernet). VPN refers to Virtual Private Network, which is defined as establishing a temporary, secure connection through a public network. It is a secure and stable tunnel through a chaotic public network. STN (Smart Transport Network) is the bearer technology used by China Telecom in the 5G era for mobile backhaul, fixed network access, edge CDN, and to cope with MEC sinking.

[0067] In each provider's virtual private network, the radio access network is also equipped with 5QI (5G QoS Identifier), which has high air interface transmission efficiency and low transmission latency.

[0068] In one feasible implementation, the virtual private network core management layer includes multiple operators' respective 5G core networks, high-speed rail management and control units, and multiple operators' respective base stations set up along the high-speed rail line. The high-speed rail management and control unit is used to configure the transmission links of different operators. Data transmitted back from each operator's base station can be aggregated to the high-speed rail management and control unit through the UPF, and then connected to their respective 5G core networks through the high-speed rail management and control unit to establish the bearer link from each operator's base station to the 5G core network.

[0069] In one feasible implementation, after determining the virtual private networks of each operator using slicing technology, each wireless bearer module in a set of wireless bearer modules corresponding to any operator's base station is also equipped with a SIM card, and the SIM card is contracted with the operator's private network slice identifier NSSAI, thereby ensuring the security and stability of wireless link backhaul.

[0070] In actual implementation, after the high-speed rail digital indoor distribution device is completed, it is also necessary to configure it on the high-speed rail management and control unit. For example, it is necessary to determine the IP address of the wireless bearer module corresponding to any supplier, system parameters (e.g., Public Land Mobile Network, PLMN), service parameters, and traffic balancing strategies.

[0071] By assigning fixed IP addresses to the wireless bearer backhaul modules and employing slicing technology, the window of inactivity in the link during data exchange caused by link reconstruction resource reservation can be reduced during interoperation of stations along the high-speed rail line. In addition, with the support of slicing technology and link aggregation technology, special connection methods of the wireless bearer modules can be pre-configured. When the wireless bearer module corresponding to one operator fails, data transmission can be switched to multiple wireless bearer modules corresponding to the base station of another operator, thereby ensuring stable signal coverage in the high-speed rail carriages.

[0072] The high-speed rail signal coverage system provided in this application embodiment determines the virtual private network corresponding to each operator based on 5G slicing technology, and the wireless bearer module corresponding to each operator sets up a SIM card to sign a contract with the operator's private network slice identifier NSSAI, thereby ensuring the security and stability of wireless link backhaul. At the same time, since the wireless bearer module corresponding to each operator is set with a fixed IP address, even if the operator's base station is changed during high-speed rail operation, the service will not be interrupted due to the change of base station, thus improving the stability and reliability of network services.

[0073] Reference Figure 6 The diagram illustrates a flowchart of a high-speed rail digital indoor distribution method according to an embodiment of this application. The method includes:

[0074] S101: In the downlink, each of the multiple groups of wireless bearer modules receives the radio frequency signal transmitted by the base station of the corresponding operator and generates the corresponding digital signal. Each group of wireless bearer modules is connected to a different operator, and each group of wireless bearer modules includes multiple wireless bearer modules.

[0075] S102: The transmission link aggregation module aggregates the digital signals of all links of the multiple groups of wireless bearer modules and then transmits them to the distribution module;

[0076] S103: The distribution module distributes the digital signals from all the aggregated links to multiple carriages of the high-speed train to provide signal coverage for the multiple carriages of the high-speed train.

[0077] In the uplink, the allocation unit receives radio frequency signals from multiple carriages of the high-speed train and transmits them back through the reverse process of the downlink, and transmits radio frequency signals to base stations of multiple operators through the multiple sets of wireless bearer modules.

[0078] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0079] Those skilled in the art will understand that embodiments of this application can be provided as methods, apparatus, or computer program products. Therefore, embodiments of this application can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of this application can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0080] This application describes embodiments with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0081] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0082] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1The steps of the function specified in one or more boxes.

[0083] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0084] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0085] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A high-speed rail digital indoor distribution system, characterized in that, The high-speed rail digital indoor distribution system is applied to high-speed rail. The system includes: multiple sets of wireless bearer modules, a transmission link aggregation module, and a distribution module, wherein: Each of the multiple wireless bearer modules is used to receive radio frequency signals transmitted by a base station of an operator in the downlink and generate corresponding digital signals. Each wireless bearer module is connected to a different operator, and each wireless bearer module includes multiple wireless bearer modules. The transmission link aggregation module is used to aggregate the digital signals of all links of the multiple sets of wireless bearer modules and then transmit them to the allocation module. The distribution module is used to distribute the digital signals from all the aggregated links to multiple carriages of the high-speed train to provide signal coverage for the multiple carriages of the high-speed train. In the uplink, the allocation module receives radio frequency signals from multiple carriages of the high-speed train and transmits them back through the reverse process of the downlink, and then transmits radio frequency signals to base stations of multiple operators through the multiple sets of wireless bearer modules.

2. The high-speed rail digital indoor distribution device according to claim 1, characterized in that, The antenna of each of the multiple wireless bearer modules is installed on the outside of the high-speed train body.

3. The high-speed rail digital indoor distribution device according to claim 1, characterized in that, In a set of wireless bearer modules corresponding to a base station of any operator, each wireless bearer module is equipped with a SIM card, and the SIM card is contracted with the operator's private network slice identifier.

4. The high-speed rail digital indoor distribution device according to claim 1, characterized in that, When multiple radio bearer modules corresponding to a base station of any operator fail, data transmission is switched to multiple radio bearer modules corresponding to a base station of another operator.

5. The high-speed rail digital indoor distribution device according to any one of claims 1-4, characterized in that, The number of wireless bearer modules and their signal transmission and reception capabilities in each group of wireless bearer modules are determined by the signal transmission and reception capabilities of the antennas of each operator's base station and / or the bandwidth requirements of the high-speed rail.

6. The high-speed rail digital indoor distribution device according to claim 1, characterized in that, The distribution module includes an indoor baseband processing unit, a splitting unit, and a multi-mode digital antenna that supports 4G and 5G dual-mode network signals. Each of the multiple carriages of the high-speed train is equipped with multiple multi-mode digital antennas.

7. A high-speed rail signal coverage system, characterized in that, Includes the high-speed rail digital indoor distribution device and the virtual private network core management layer as described in any one of claims 1-6. The virtual private network core management layer includes virtual private networks of multiple operators. In the downlink, different operators send radio frequency signals to base stations set up along the railway line based on their respective virtual private networks. The high-speed rail digital indoor distribution device is used to receive radio frequency signals sent by base stations of different operators and to provide signal coverage for multiple carriages of the high-speed rail.

8. The high-speed rail signal coverage system according to claim 7, characterized in that, The virtual private network core management layer includes multiple operators' respective 5G core networks, high-speed rail management and control units, and multiple operators' respective base stations set up along the high-speed rail line; wherein, the high-speed rail management and control unit is used to configure the transmission links of different operators.

9. The high-speed rail signal coverage system according to claim 7, characterized in that, The core management layer of the virtual private network (VPN) uses 5G slicing technology to distribute traffic to different suppliers and establish VPNs corresponding to each supplier.

10. The high-speed rail signal coverage system according to claim 9, characterized in that, In the virtual private network (VPN) of any vendor in the core management layer of the VPN, the flow direction of the slice data stream corresponding to the vendor is determined based on the trained neural network (DNN), and the bearer network slice of the vendor is built in the STN network based on VPN technology and FlexE, and 5G service quality identifier is set in the radio access network of the vendor.

11. The high-speed rail signal coverage system according to claim 7, characterized in that, In the virtual private network (VPN) of any vendor in the core management layer of the VPN, determine the IP address of the wireless bearer module of that vendor in the high-speed rail digital indoor distribution device.

12. A method for digital indoor distribution systems in high-speed rail, characterized in that, The method, applied to the high-speed rail digital indoor distribution device according to any one of claims 1-6, comprises: In the downlink, each of the multiple groups of wireless bearer modules receives the radio frequency signal transmitted by the base station of the corresponding operator and generates the corresponding digital signal. Each group of wireless bearer modules connects to a different operator, and each group of wireless bearer modules includes multiple wireless bearer modules. The transmission link aggregation module aggregates the digital signals of all links of the multiple groups of wireless bearer modules and then transmits them to the distribution module; The distribution module distributes the digital signals from all the aggregated links to multiple carriages of the high-speed train to provide signal coverage for the multiple carriages of the high-speed train. In the uplink, the allocation module receives radio frequency signals from multiple carriages of the high-speed train and transmits them back through the reverse process of the downlink, and then transmits radio frequency signals to base stations of multiple operators through the multiple sets of wireless bearer modules.

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