Base station communication method, device and intrinsically safe communication system for mines

Abstract

The present disclosure relates to a base station communication method, device and an intrinsically safe communication system for mines. The method includes: obtaining a measurement report reported by a terminal, parsing the measurement report, obtaining field strength information in a downlink radio frequency signal received by the terminal, and when the field strength information is less than a field strength threshold, adjusting the signal bandwidth of the base station to a preset signal bandwidth value and keeping the number of resources allocated to the terminal unchanged, sending a command for indicating an increase in the downlink gain of the base station, and controlling the total transmission power of the antenna port of the radio frequency unit to increase from the current transmission power value to the maximum transmission power value. Thus, when the number of resources allocated to the terminal remains unchanged, the average power of each resource allocated to the terminal is increased by increasing the transmission power of the radio frequency unit, thereby increasing the power spectrum density received by the terminal, so that the effect of increasing the coverage distance and controlling the power consumption of the device is achieved without increasing the total transmission power.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a base station communication method, device and an intrinsically safe communication system for mines. Background Art

[0002] In the mining industry, mine communications require multi-point high-definition video monitoring, remote control, intelligent management and other services for the mine working face. At present, the fifth generation mobile communication technology (5th generation mobile networks or 5th generation wireless systems, 5th-Generation, referred to as 5G or 5G technology) has become an important direction for the transformation of mine communications due to its advantages such as large bandwidth, low latency, large connections and high reliability. Mine communications can use 5G signal services to achieve digital, networked and intelligent service upgrades, which is conducive to improving the service quality of mine communications and the production efficiency of mines.

[0003] Generally, mining equipment needs to meet coal safety certification, including flameproof certification and intrinsic safety certification. Once a failure or accident occurs at the working face of a mine, the flameproof equipment needs to be powered off, while the intrinsic safety equipment does not need to be powered off and continues to be used to provide 5G signal services underground. Therefore, intrinsic safety equipment is more suitable for working faces in mines and meets the needs of the mining industry.

[0004] However, intrinsically safe devices have power consumption requirements. For example, the output power of the device power supply must be less than the specified power threshold, otherwise the device will automatically shut down. Due to the large signal bandwidth of 5G terminals, the power consumption of the device components is large, making it difficult for the actual power consumption of the device to meet the power consumption requirements of intrinsically safe devices.

[0005] Therefore, how to introduce 5G communications in the mining field while ensuring that 5G terminals meet the power consumption requirements of intrinsically safe equipment is an urgent problem that needs to be solved. Summary of the invention

[0006] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a base station communication method, device and an intrinsically safe communication system for mines.

[0007] In a first aspect, the present disclosure provides a communication method, applied to a base station, the method comprising:

[0008] Obtain the measurement report reported by the terminal;

[0009] Parse the measurement report to obtain the field strength information of the downlink radio frequency signal received by the terminal;

[0010] When the field strength information is less than a preset field strength threshold, adjusting the signal bandwidth of the base station to a preset signal bandwidth value and keeping the number of resources allocated to the terminal unchanged;

[0011] A command for instructing to increase the downlink gain of the base station is sent to control the total transmit power of the antenna port of the radio frequency unit RU to increase from the current transmit power value to the preset maximum transmit power value.

[0012] Through the communication method provided in the first aspect, the measurement report reported by the terminal is obtained, the measurement report is parsed, and the field strength information in the downlink radio frequency signal received by the terminal is obtained. When the field strength information is less than the preset field strength threshold, the signal bandwidth of the base station is adjusted to the preset signal bandwidth value and the number of resources allocated to the terminal remains unchanged, and a command for indicating an increase in the downlink gain of the base station is sent to control the total transmission power of the antenna port of the radio frequency unit to increase from the current transmission power value to the preset maximum transmission power value. Thus, when the number of resources allocated to the terminal remains unchanged, the average power of each resource allocated to the terminal is increased by increasing the transmission power of the downlink radio frequency signal of the radio frequency unit, thereby increasing the power spectrum density received by the terminal, so that the effect of increasing the coverage distance and controlling the power consumption of the device is achieved without increasing the total transmission power.

[0013] In a second aspect, the present disclosure provides a communication device, including:

[0014] A report reading module is used to obtain the measurement report reported by the terminal;

[0015] The parsing module is used to parse the measurement report to obtain the field strength information of the downlink radio frequency signal received by the terminal;

[0016] A control module, used for adjusting the signal bandwidth of the base station to a preset signal bandwidth value and keeping the number of resources allocated to the terminal unchanged when the field strength information is less than a preset field strength threshold;

[0017] The sending increase module is used to send a command for instructing to increase the downlink gain of the base station, and control the total transmit power of the antenna port of the radio frequency unit RU to increase from the current transmit power value to the preset maximum transmit power value.

[0018] In a third aspect, the present disclosure provides an intrinsically safe communication system for use in mines, comprising: a host unit AU and a plurality of radio frequency units RU, wherein the intrinsically safe communication system for use in mines is used to execute the communication method described in the embodiment of the first aspect.

[0019] The beneficial effects of the communication device provided in the above-mentioned second aspect and each possible design of the above-mentioned second aspect, and the intrinsically safe communication system for mines provided in the above-mentioned third aspect and each possible design of the above-mentioned third aspect, can be referred to the beneficial effects brought about by the above-mentioned first aspect and each possible implementation method of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A A flow chart of a communication method provided in an embodiment of the present disclosure;

[0021] Figure 1B A schematic diagram of comparing the power spectrum density of a downlink transmission signal received by a terminal before and after gain adjustment provided in an embodiment of the present disclosure;

[0022] Figure 1C A schematic diagram comparing the effects of coverage distance before and after gain adjustment provided by an embodiment of the present disclosure;

[0023] Figure 2A-2B A flow chart of a communication method provided in an embodiment of the present disclosure;

[0024] Figure 3 A schematic diagram of the structure of an intrinsically safe communication system for mines provided by an embodiment of the present disclosure;

[0025] Figure 4 A schematic diagram of the structure of a radio frequency unit provided in an embodiment of the present disclosure;

[0026] Figure 5A A schematic diagram of the structure of a first module in a radio frequency unit provided in an embodiment of the present disclosure;

[0027] Figure 5B A schematic diagram of the structure of a second module in a radio frequency unit provided in an embodiment of the present disclosure;

[0028] Figure 5C A schematic diagram of data processing in the downlink direction by a radio frequency unit provided in an embodiment of the present disclosure;

[0029] Figure 5D A schematic diagram of data processing in the uplink direction by a radio frequency unit provided in an embodiment of the present disclosure;

[0030] Fig. 6A A schematic diagram of the structure of a first module in a radio frequency unit provided in an embodiment of the present disclosure;

[0031] Figure 6B A schematic diagram of the structure of a second module in a radio frequency unit provided in an embodiment of the present disclosure;

[0032] Figure 6CA schematic diagram of data processing in the downlink direction by a radio frequency unit provided in an embodiment of the present disclosure;

[0033] Fig.6D A schematic diagram of data processing in the uplink direction by a radio frequency unit provided in an embodiment of the present disclosure;

[0034] Figure 7 A schematic diagram of the structure of a host unit provided in an embodiment of the present disclosure.

[0035] Description of reference numerals:

[0036] 100—intrinsically safe communication system for mines; 101—host unit; 102—radio frequency unit; 200—core network; 300—terminal; 401—first external power supply; 402—second external power supply; 1021—first module; 1022—second module. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0039] In practical applications, for example, 5G equipment needs to meet certain coverage distance requirements at the working surface of a mine. Considering the power consumption requirements of intrinsically safe equipment, the equipment cannot increase the coverage distance by increasing power in traditional technologies, otherwise the power consumption of the equipment will increase. In order to solve the aforementioned problems, the communication method disclosed in the present invention increases the transmission power of the downlink radio frequency signal of the base station to increase the average power of each resource allocated to the terminal without increasing the total transmission power, thereby increasing the power spectrum density received by the terminal, thereby achieving the effect of increasing the coverage distance and controlling the power consumption of the equipment.

[0040] Combine the following Figure 1A-Figure 1C The implementation process of the communication method disclosed in the present invention for improving the coverage distance without increasing the transmission power is described in detail.

[0041] See also Figure 1A , Figure 1A The following is a flow chart of a communication method provided by an embodiment of the present disclosure. Figure 1A As shown, the communication method of the present disclosure is applied to a base station and may include:

[0042] S101. Obtain a measurement report reported by a terminal.

[0043] The base station obtains the measurement report reported by the terminal in real time, wherein the measurement report includes: field strength information of the downlink radio frequency signal received by the terminal 300.

[0044] In the embodiment of the present disclosure, the base station includes an access unit (AU) and a radio unit (RU). The RU in the base station transmits power according to a preset maximum transmission power value P. 额定 The RU sends a downlink transmission signal to the terminal and obtains the measurement report reported by the terminal in real time. The RU can transmit the measurement report to the AU in the base station.

[0045] S102: Analyze the measurement report to obtain field strength information of the downlink radio frequency signal received by the terminal.

[0046] The base station can parse the measurement report to obtain the field strength information of the downlink radio frequency signal received by the terminal.

[0047] In the embodiment of the present disclosure, the AU in the base station may parse out the field strength information of the downlink radio frequency signal received by the terminal in the measurement report.

[0048] When the field strength information is greater than or equal to the preset field strength threshold, the base station may not perform any operation and continue to perform step S101; when the field strength information is less than the preset field strength threshold, the base station performs step S103.

[0049] S103: When the field strength information is less than a preset field strength threshold, adjust the signal bandwidth of the base station to a preset signal bandwidth value and keep the number of resources allocated to the terminal unchanged.

[0050] When the field strength information is less than the preset field strength threshold, the signal bandwidth of the base station is adjusted to the preset signal bandwidth value, such as reducing the signal bandwidth from 100MHz to 60MHz. The method of adjusting the signal bandwidth of the base station in the present disclosure is not limited. For example, the AU in the base station can gradually reduce the signal bandwidth of the base station based on 5G communication until the field strength information is greater than or equal to the preset field strength threshold. For another example, the AU in the base station directly configures the signal bandwidth of the base station to be 60MHz, so that the signal bandwidth of the base station is 60MHz.

[0051] In addition, in order to keep the terminal performance unchanged (such as the downlink peak rate), the amount of resources allocated to the terminal remains unchanged.

[0052] S104: Send a command for instructing to increase the downlink gain of the base station, and control the total transmit power of the antenna port of the radio frequency unit RU to increase from the current transmit power value to a preset maximum transmit power value.

[0053] When the signal bandwidth of the base station is reduced to the preset signal bandwidth value, the total transmit power value of the RU antenna port will be increased from the preset maximum transmit power value P 额定 Reduce to the current transmit power value P 临时 , and the total resource block (RB) resources of the base station are also reduced accordingly, but the average power P of each RB 0 The preset maximum transmit power value can be understood as the maximum allowable transmit power value.

[0054] On the basis that the performance of the terminal (such as the downlink peak rate) remains unchanged and the number of RB resources allocated to the terminal in the cell corresponding to the terminal remains unchanged, the AU can send a command to the AU and / or multiple RUs to indicate an increase in the downlink gain.

[0055] Among them, the AU can send a command to at least one of the first layer submodule in the AU, the digital baseband submodule in multiple RUs, and the radio frequency submodule in multiple RUs. The first layer submodule in the AU can increase the gain of the downlink by increasing the signal weight. The digital baseband submodule in multiple RUs can increase the gain of the downlink by increasing the weight of the digital signal. The radio frequency submodule in multiple RUs can increase the gain of the downlink by increasing the power amplifier of the analog signal. In addition, the present disclosure does not limit the specific implementation method of the command to instruct to increase the downlink gain of the base station.

[0056] After receiving the command indicating to increase the downlink gain of the base station, the AU and / or multiple RUs may control the total transmit power value of the antenna ports of the multiple radio frequency units 102 to increase from the current transmit power value P 临时 Increase to the preset maximum transmit power value P 额定 , achieving an increase in downlink gain.

[0057] At this time, by increasing the current transmit power value to the preset maximum transmit power value, the average power of each resource module allocated to the terminal is automatically adjusted according to the ratio of the maximum transmit power value to the current transmit power. The average power P of each RB is 1 Equal to P 0 *(P 额定 / P 临时 ), P 1 Greater than P 0 . So Figure 2B As shown, the power spectrum density before gain adjustment is N*P 0 , the power spectral density after gain adjustment is N*P 0 *(P 额定 / P 临时). N is the number of RB resources, that is, by increasing the current transmit power value to the preset maximum transmit power value and keeping the number of terminal resources unchanged, the average power of each resource module can be increased.

[0058] Therefore, there is no need to adjust the base station (for example, there is no need to replace a high-power base station, or improve the transmission power of the base station through hardware, etc.), and the number of RB resources allocated by the base station to the terminal remains unchanged, so that the RBW allocated to the terminal remains unchanged. RBW is the resolution bandwidth. Accordingly, the power spectrum density of the downlink transmission signal received by the terminal is improved, so that the coverage distance is increased and the power consumption of the device is controlled without increasing the total transmission power of the base station. Therefore, if Figure 1C As shown, the base station is a 5G intrinsically safe base station. In the 5G intrinsically safe base station, the original 5G coverage area is smaller than the coverage distance of the improved 5G coverage area.

[0059] In summary, by increasing the transmit power of the RF unit to increase the average power of each resource allocated to the terminal without increasing the transmit power and keeping the number of resources allocated to the terminal unchanged, the power spectrum density received by the terminal is improved, so that the coverage distance can be increased and the power consumption of the device can be controlled without increasing the total transmit power.

[0060] Next, the base station includes a radio frequency unit RU and a host unit AU, and the implementation process of the host unit interacting with multiple radio frequency units is introduced.

[0061] Combination Figure 2A , which elaborates on the interaction process between AU and multiple RUs in the downlink direction. Figure 2A , Figure 2A The following is a flow chart of a communication method provided by an embodiment of the present disclosure. Figure 2A As shown, the communication method of the present disclosure may include:

[0062] S201. AU receives a downlink signal transmitted by a core network.

[0063] S202. AU converts the downlink signal into a downlink baseband signal.

[0064] S203. The AU transmits a downlink baseband signal to multiple RUs.

[0065] S204. Multiple RUs convert downlink baseband signals into downlink radio frequency signals.

[0066] S205. Multiple RUs transmit downlink radio frequency signals to the terminal.

[0067] The present disclosure does not limit the specific implementation of the downlink signal, the downlink baseband signal, and the downlink radio frequency signal. In addition, the downlink baseband signal is a digital signal, and the downlink radio frequency signal is an analog signal.

[0068] Combination Figure 2B , which elaborates on the interaction process between AU and multiple RUs in the uplink direction. Figure 2B , Figure 2B The following is a flow chart of a communication method provided by an embodiment of the present disclosure. Figure 2B As shown, the communication method of the present disclosure may include:

[0069] S301. An RU receives an uplink radio frequency signal from a terminal.

[0070] S302: The RU receives and converts the uplink radio frequency signal into an uplink baseband signal.

[0071] S303. The RU transmits an uplink baseband signal to the AU.

[0072] S304: AU converts the uplink baseband signal into an uplink signal.

[0073] S305. AU transmits an uplink signal to the core network.

[0074] The present disclosure does not limit the specific implementation of the uplink radio frequency signal, the uplink baseband signal, and the uplink signal. In addition, the uplink baseband signal is a digital signal, and the uplink radio frequency signal is an analog signal.

[0075] Based on the same inventive concept as the above method embodiment, the present disclosure also provides a communication device, which is applied to a base station, see Figure 3 , Figure 3 The following is a flow chart of a communication method provided by an embodiment of the present disclosure. Figure 3 As shown, the communication device of the present disclosure may include:

[0076] The report reading module 301 is used to obtain the measurement report reported by the terminal.

[0077] The analysis module 302 is used to analyze the measurement report to obtain the field strength information of the downlink radio frequency signal received by the terminal.

[0078] The control module is used to adjust the signal bandwidth of the base station to a preset signal bandwidth value and keep the number of resources allocated to the terminal unchanged when the field strength information is less than a preset field strength threshold.

[0079] The sending increase module is used to send a command for instructing to increase the downlink gain of the base station, and control the total transmit power of the antenna port of the radio frequency unit RU to increase from the current transmit power value to the preset maximum transmit power value.

[0080] In summary, the communication device disclosed in the present invention increases the average power of each resource allocated to the terminal by increasing the transmit power of the radio frequency unit without increasing the transmit power and keeping the number of resources allocated to the terminal unchanged, thereby improving the power spectrum density received by the terminal, thereby achieving the effect of increasing the coverage distance and controlling the power consumption of the device without increasing the total transmit power.

[0081] In an optional implementation manner, the base station includes a radio frequency unit RU and a host unit AU, and the device further includes:

[0082] A first receiving and converting module, used for the RU to receive an uplink radio frequency signal from a terminal and convert the uplink radio frequency signal into an uplink baseband signal;

[0083] The first transmission module is used for the RU to transmit the uplink baseband signal to the AU, so that the AU converts the uplink baseband signal into an uplink signal and transmits the uplink signal to the core network.

[0084] In an optional implementation, the device further includes:

[0085] A second receiving and converting module, configured for the AU to receive a downlink signal from the core network and convert the downlink signal into a downlink baseband signal;

[0086] The second transmission module is used for the AU to transmit a downlink baseband signal to the RU, so that the RU converts the downlink baseband signal into a downlink radio frequency signal and transmits the downlink radio frequency signal to the terminal.

[0087] The present disclosure also provides an intrinsically safe communication system for mines. Figure 3 , Figure 3 This is a schematic diagram of the structure of an intrinsically safe communication system for mines provided by an embodiment of the present disclosure. Figure 3 As shown, the intrinsically safe communication system 100 for mines disclosed herein may include: an access unit (AU) 101 and a plurality of radio remote units (RU) 102 .

[0088] The host unit 101 mainly completes the processing of each layer (such as L3 / L2 / L1) in the communication protocol (such as 5G communication protocol), operation and maintenance, communication with the core network (such as 5G core network) 200, and communication with the radio frequency unit 102. Generally, the host unit 101 can be deployed in the non-working surface of the mine, such as the mine machine room. Among them, L means layer, L1 is the physical layer, L2 is the data link layer, and L3 is the network layer.

[0089] The RF unit 102 mainly performs functions such as receiving and sending RF signals, digital-to-analog conversion, communication with the host unit 101 or the upper-level RF unit 102, and communication with the lower-level RF unit 102. Generally, multiple RF units can be deployed at the working surface of a mine, such as a transport tunnel, a mining surface, etc.

[0090] In the present disclosure, multiple RF units 102 are connected in multi-stage cascade via optical fibers, and the host unit 101 is connected to the multiple RF units 102 via optical fibers. The present disclosure does not limit the connection method between the host unit 101 and the multiple RF units 102.

[0091] For example, a star connection is supported between the host unit 101 and the multiple RF units 102. In some embodiments, the RF units 102 in the multiple RF units 102 are connected in multi-stage cascade, and the host unit 101 and the first-stage RF units ( Figure 3 The radio frequency units 1) in the embodiment are connected via optical fiber.

[0092] For another example, the host unit 101 supports a ring connection with the multiple radio frequency units 102. In some embodiments, the radio frequency units 102 in the multiple radio frequency units 102 are connected in multi-stage cascade, and the host unit 101 and the first-stage radio frequency unit ( Figure 3 RF unit 1) and the tail stage RF unit ( Figure 3 The radio frequency unit m) is connected via optical fiber.

[0093] For another example, the host unit 101 supports star connection and ring connection with multiple radio frequency units 102. In some embodiments, multiple radio frequency units 102 form a first cascade chain and a second cascade chain, and each cascade chain includes at least two radio frequency units 102. The host unit 101 and the first radio frequency unit ( Figure 3 The main unit is connected to the first-stage radio frequency unit ( Figure 3 Middle RF unit 1) and tail RF unit ( Figure 3 The radio frequency unit m) is connected via optical fiber.

[0094] In the multiple radio frequency units 102, each radio frequency unit 102 is powered by two separate and non-commonly-grounded first external power supplies 401 and second external power supplies 402. The non-commonly-grounded here can be understood as: the power supply housings of the first external power supply 401 and the second external power supply 402 are not connected together; or, the DC grounds of the first external power supply 401 and the second external power supply 402 are not connected together. Among them, the present disclosure does not limit the type, voltage, current, power and other parameters of the first external power supply 401 and the second external power supply 402.

[0095] Moreover, the sum of the actual power consumption of the first external power supply 401 and the actual power consumption of the second external power supply 402 is greater than the power consumption threshold of the intrinsically safe power supply, which can provide the power required for operation to the intrinsically safe communication system 100, thereby ensuring the normal operation of the intrinsically safe communication system 100, and the maximum power consumption values ​​of the first external power supply 401 and the second external power supply 402 are both less than or equal to the power consumption threshold of the intrinsically safe power supply, thereby ensuring that the actual power consumption of each radio frequency unit 102 does not exceed the power consumption requirement of the intrinsically safe device.

[0096] Therefore, when a fault or accident occurs at the working face of the mine, each radio frequency unit 102 can still maintain normal operation, so that the intrinsically safe communication system 100 can provide high-speed signal services at the working face of the mine, ensuring normal underground work and improving the communication quality of the working face of the mine.

[0097] The intrinsically safe communication system for mines provided by the present disclosure adopts a two-level architecture communication system of a host unit and multiple radio frequency units, wherein the host unit is deployed on the non-working face of the mine, and the multiple radio frequency units are deployed on the working face of the mine, and the multiple radio frequency units are connected by multi-stage cascade connection of optical fibers, and the host unit and the multiple radio frequency units are connected by optical fibers, so that the host unit and the multiple radio frequency units can communicate with each other. In addition, the multiple radio frequency units adopt a dual power supply input design, and the sum of the actual power consumption of the two power supplies is greater than the power consumption threshold of the intrinsically safe power supply to ensure the normal operation of the intrinsically safe communication system, and the maximum power consumption value of each power supply is less than or equal to the power consumption threshold of the intrinsically safe power supply to ensure that the actual power consumption of each radio frequency unit does not exceed the power consumption requirement of the intrinsically safe equipment. Therefore, when a fault or accident occurs on the working face of the mine, the intrinsically safe communication system can still provide high-speed signal services on the working face of the mine, ensuring the normal operation of underground work and improving the communication quality of the working face of the mine.

[0098] Based on the above description, in addition to the dual power supply ( 401 and 402 ) input, each RF unit 102 can also be modularized to ensure that the actual power consumption of each RF unit 102 does not exceed the power consumption requirement of the intrinsically safe device.

[0099] Next, combine Figure 4 , a specific implementation structure of a radio frequency unit 102 is introduced.

[0100] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of the radio frequency unit provided in the embodiment of the present disclosure. Figure 4 As shown, in the multiple RF units 102 , each RF unit 102 may include: a first module 1021 and a second module 1022 .

[0101] The first module 1021 and the second module 1022 are connected to each other. The first module 1021 is powered by the first external power source 401 , and the second module 1022 is powered by the second external power source 402 .

[0102] Therefore, each radio frequency unit 102 adopts a combination design of two modules (1021 and 1022), and the two modules (1021 and 1022) are powered separately, so that the actual power consumption of each module (1021 or 1022) does not exceed the power consumption requirement of the intrinsically safe device.

[0103] Furthermore, the uplink port of the first module 1021 is connected to the downlink port of the first module 1021 in the upper-level RF unit 102 or the host unit 101, and the downlink port of the first module 1021 is connected to the uplink port of the first module 1021 in the lower-level RF unit 102. The uplink port and the downlink port can be understood as communication interfaces.

[0104] For example, the plurality of RF units 102 include RF unit 1, RF unit 2, and RF unit 3 connected in cascade, and RF unit 1 is connected to the host unit 101. Then, for RF unit 1, the uplink port of the first module in RF unit 1 is connected to the host unit, and the downlink port of the first module in RF unit 1 is connected to the uplink port of the first module in RF unit 2. For RF unit 2, the uplink port of the first module in RF unit 2 is connected to the downlink port of the first module in RF unit 1, and the downlink port of the first module in RF unit 2 is connected to the uplink port of the first module in RF unit 3.

[0105] Thus, the two modules (1021 and 1022) are connected to realize mutual communication between the modules, and each module is connected to the system 100 through the uplink port and the downlink port to realize communication between the modules (1021 and 1022) and the system 100.

[0106] Based on the above Figure 4 In the description of the embodiment, the present disclosure can adopt two angles, antenna channel (one antenna is responsible for receiving and transmitting signals, 1T1R) or digital-to-analog conversion, to design the combination of the first module 1021 and the second module 1022.

[0107] Next, combine Figure 5A-5D as well as Figure 6A-6D , two feasible combinations of the first module 1021 and the second module 1022 in a radio frequency unit are introduced.

[0108] See also Figure 5A-Figure 5B , Figure 5A A schematic diagram of the structure of a first module in a radio frequency unit provided in an embodiment of the present disclosure, Figure 5BA schematic diagram of the structure of a second module in a radio frequency unit provided in an embodiment of the present disclosure.

[0109] Among the multiple RF units 102 , the first module 1021 and the second module 1022 in one RF unit 102 have the same composition, and the first module 1021 is provided with an uplink port and a downlink port.

[0110] like Figure 5A As shown, the first module 1021 may include: a first digital baseband submodule 1021-11, a first digital-to-analog conversion submodule 1021-12, a first radio frequency submodule 1021-13, a first power supply submodule 1021-14, a first control submodule 1021-15 and a first interconnection interface 1021-16.

[0111] In the first module 1021, the first digital baseband submodule 1021-11 is respectively connected to the first digital-to-analog conversion submodule 1021-12, the first power supply submodule 1021-4, the first control submodule 1021-15 and the first interconnection interface 1021-16; the first digital-to-analog conversion submodule 1021-12 is also respectively connected to the first radio frequency submodule 1021-13, the first power supply submodule 1021-14 and the first control submodule 1021-15; the first radio frequency submodule 1021-13 is also respectively connected to the first power supply submodule 1021-14 and the first control submodule 1021-15; the first interconnection interface 1021-16 is also connected to the second interconnection interface 1022-16 in the second module 1022; the first power supply submodule 1021-4 is also connected to the first external power supply 401.

[0112] like Figure 5B As shown, the second module 1022 may include: a second digital baseband submodule 1022-11, a second digital-to-analog conversion submodule 1022-12, a second radio frequency submodule 1022-13, a second power supply submodule 1022-14, a second control submodule 1022-15 and a second interconnection interface 1022-16.

[0113] In the second module 1022, the second digital baseband submodule 1022-11 is respectively connected to the second digital-to-analog conversion submodule 102-12, the second power supply submodule 1022-14, the second control submodule 1022-15 and the second interconnection interface 1022-16; the second digital-to-analog conversion submodule 102-12 is also respectively connected to the second radio frequency submodule 1022-13, the second power supply submodule 1022-14 and the second control submodule 1022-15; the second radio frequency submodule 1022-13 is also respectively connected to the second power supply submodule 1022-14 and the second control submodule 1022-15; the second interconnection interface 1022-16 is also connected to the first interconnection interface 1021-16 in the first module 1021; the second power supply submodule 1022-14 is also connected to the second external power supply 402.

[0114] exist Figure 5A-Figure 5B Based on the embodiment, combined Figure 5C-5D , the functions of each sub-module in a radio frequency unit 102 are introduced.

[0115] See also Figure 5C-5D , Figure 5C A schematic diagram of data processing in a downlink direction by a radio frequency unit provided in an embodiment of the present disclosure, Figure 5D A schematic diagram of data processing in an uplink direction by a radio frequency unit provided in an embodiment of the present disclosure.

[0116] For ease of description, it is assumed that the first RF unit is one of the RF units 102. Figure 5C-5D In the example, the first radio frequency unit may be marked as RU m , the first radio frequency unit RU m The next level radio unit can be marked as RU m+1 , the first radio frequency unit RU m The first module 1021 in the embodiment may be labeled as module A1, the first radio frequency unit RU m The second module 1022 in the embodiment may be labeled as module B1, and the first radio frequency unit RU m The next level radio frequency unit RU m+1 The first module 1021 in the embodiment may be labeled as module A2, the first radio frequency unit RU m The next level radio frequency unit RU m+1 The second module 1022 in can be labeled as module B2.

[0117] In the downlink direction, the digital baseband submodule in module A1 can parse the protocol of the uplink port of module A1, such as the common public radio interface (CPRI) or eCPRI (enhanced CPRI), and obtain IQ baseband service data and monitoring management data from the downlink baseband signal.

[0118] Among them, the IQ baseband service data is two-way data, so the digital baseband submodule in module A1 can be parsed to obtain the first radio frequency unit RU m The first downlink baseband service data I 1 Q 1 and the first radio frequency unit RU m The second downlink baseband service data I 2 Q 2 .

[0119] Among them, since the intrinsically safe communication system 100 has configured the allocation address of the monitoring management data for each radio frequency unit, the digital baseband submodule in the module A1 can parse and obtain the first radio frequency unit RU based on the configured address. m The first downlink monitoring management data IP 11 and the first radio frequency unit RU m Second downlink monitoring management data IP 12 .

[0120] The digital baseband submodule in module A1 can convert the first radio frequency unit RU m The first downlink baseband service data I 1 Q 1 Transmitted to the digital-to-analog conversion submodule in module A1.

[0121] The digital baseband submodule in module A1 can convert the first radio frequency unit RU m The second downlink baseband service data I 2 Q 2 The digital baseband submodule in module B1 obtains the first radio frequency unit RU through the interconnection interface in module A1. m The second downlink baseband service data I 2 Q 2 The digital baseband submodule in module B1 then transmits the first radio frequency unit RU m The second downlink baseband service data I 2 Q 2 Transmitted to the digital-to-analog conversion submodule in module B1.

[0122] The digital baseband submodule in module A1 can convert the first radio frequency unit RU mThe first downlink monitoring management data IP 11 Transmitted to the control submodule in module A1.

[0123] The digital baseband submodule in module A1 can convert the first radio frequency unit RU m Second downlink monitoring management data IP 12 The digital baseband submodule in module B1 obtains the first radio frequency unit RU through the interconnection interface in module A1. m Second downlink monitoring management data IP 12 The digital baseband submodule in module B1 then transmits the first radio frequency unit RU m Second downlink monitoring management data IP 12 Transmitted to the control submodule in module B1.

[0124] In addition, the digital baseband submodule in module A1 can transmit the downlink baseband signal to the next-level radio frequency unit RU through the downlink port of module A1. m+1 The digital baseband submodule in module A2 in .

[0125] Among them, the next level radio frequency unit RU m+1 The digital baseband submodule in module A2 and the first radio frequency unit RU m The processing method of the digital baseband submodule in module A1 is the same as that in FIG.

[0126] The protocol of the downlink port can refer to the description of the protocol of the uplink port, which will not be described here.

[0127] In addition, when the number of cascaded RF units in multiple RF units is large, the present disclosure can, based on the above principle, divide the IQ baseband service data in the downlink baseband signal into two streams for broadcast and send down, and route and forward the monitoring and management data in the downlink baseband signal according to the IP address configured for each RF unit.

[0128] In the uplink direction, the digital baseband submodule in module A1 can receive the first radio frequency unit RU from the digital-to-analog conversion submodule in module A1. m The first uplink baseband service data (I 1 Q 1 )Book.

[0129] The digital baseband submodule in module A1 can receive the first radio frequency unit RU from the digital baseband submodule in module B1 through the interconnection interface in module A1 and the interconnection interface in module B1. m The second uplink baseband service data (I 2 Q 2 ) 本The digital baseband submodule in module B1 can receive the first radio frequency unit RU from the digital-to-analog conversion submodule in module B1. m The second uplink baseband service data (I 2 Q 2 ) 本 .

[0130] The digital baseband submodule in module A1 can receive the first radio frequency unit RU from the control submodule in module A1. m The first uplink monitoring management data IP 11 .

[0131] The digital baseband submodule in module A1 can receive the first radio frequency unit RU from the digital baseband submodule in module B1 through the interconnection interface in module A1 and the interconnection interface in module B1. m Second uplink monitoring management data IP 12 The digital baseband submodule in module B1 receives the first radio frequency unit RU from the control submodule in module B1. m Second uplink monitoring management data IP 12 .

[0132] The digital baseband submodule in module A1 can be connected to the next level RF unit RU through the downlink port of module A1. m+1 The digital baseband submodule in module A2 receives the next level radio frequency unit RU m+1 The encapsulated data is sent to the next level RF unit RU m+1 The packaged signal is analyzed to obtain the next level RF unit RU m+1 The first uplink baseband service data (I 1 Q 1 ) 下 , the next level radio frequency unit RU m+1 The second uplink baseband service data (I 2 Q 2 ) 下 , the next level radio frequency unit RU m+1 The first monitoring management data IP 21 and the next level RF unit RU m+1 Second monitoring management data IP 22 .

[0133] Thus, the digital baseband submodule in module A1 can be used to control the first radio frequency unit RU m The first uplink baseband service data (I 1 Q 1 ) 本 and the next level RF unit RU m+1 The first uplink baseband service data (I 1 Q 1 )下 The first uplink baseband service data (I 1 Q 1 ) 叠 , that is (I 1 Q 1 ) 叠 =(I 1 Q 1 ) 本 +(I 1 Q 1 ) 下 .

[0134] The digital baseband submodule in module A1 is connected to the first radio frequency unit RU m The second uplink baseband service data (I 2 Q 2 ) 本 and the next level RF unit RU m+1 The second uplink baseband service data (I 2 Q 2 ) 下 The superposition is performed to obtain the superimposed second uplink baseband service data (I 2 Q 2 ) 叠 , that is (I 2 Q 2 ) 叠 =(I 2 Q 2 ) 本 +(I 2 Q 2 ) 下 .

[0135] The digital baseband submodule in module A1 can transmit the superimposed first uplink baseband service data (I 1 Q 1 ) 叠 , the superimposed second uplink baseband service data (I 2 Q 2 ) 叠 , first radio frequency unit RU m The first uplink monitoring management data IP 11 , first radio frequency unit RU m Second uplink monitoring management data IP 12 , the next level radio frequency unit RU m+1 The first uplink monitoring management data IP 21 and the next level RF unit RU m+1 Second uplink monitoring management data IP 22 Encapsulate into a protocol (such as CPRI or eCPRI) to obtain the first radio unit RU mThe encapsulated data is sent to the first RF unit RU m The encapsulated data is transmitted to the digital baseband submodule or the host unit in the first module in the upper-level radio frequency unit through the uplink port of module A1.

[0136] In addition, when the number of cascaded RF units in multiple RF units is large, the present disclosure can divide the IQ baseband service data in the uplink baseband signal into two streams for superposition and reporting based on the above principle, and aggregate the monitoring and management data in the uplink baseband signal and convert and report it.

[0137] In the downlink direction, the RF submodule in module A1 can receive the RF signal from the digital-to-analog conversion submodule in module A1, amplify and filter the RF signal, and transmit the processed RF signal to the terminal 300 through the antenna port.

[0138] In the uplink direction, the RF submodule in module A1 can receive uplink RF signals from the terminal 300 through the antenna port, filter and amplify the uplink RF signals, and transmit the processed uplink RF signals to the digital-to-analog conversion submodule in module A1.

[0139] In the downlink direction, the RF submodule in module B1 can receive the RF signal from the digital-to-analog conversion submodule in module B1, amplify and filter the RF signal, and transmit the processed RF signal to the terminal 300 through the antenna port.

[0140] In the uplink direction, the RF submodule in module B1 can receive uplink RF signals from the terminal 300 through the antenna port, filter and amplify the uplink RF signals, and transmit the processed uplink RF signals to the digital-to-analog conversion submodule in module B1.

[0141] The power submodule in module A1 can receive power input from the first external power supply 401 and respectively supply power to the digital baseband submodule in module A1, the digital-to-analog conversion submodule in module A1, the RF submodule in module A1 and the control submodule in module A1.

[0142] The power submodule in module B1 can receive power input from the second external power supply 402 and respectively supply power to the digital baseband submodule in module B1, the digital-to-analog conversion submodule in module B1, the RF submodule in module B1 and the control submodule in module B1.

[0143] In some embodiments, the RF sub-module in module A1 may include 1 downlink RF unit and k uplink receiving units, k is a positive integer; and / or, the RF sub-module in module B1 may include 1 downlink RF unit and n uplink receiving units, n is a positive integer, where k may be the same number as n or different.

[0144] The control submodule in module A1 can complete the power-on process, parameter configuration, software upgrade, monitoring and management of module A1. The control submodule in module B1 can complete the power-on process, parameter configuration, software upgrade, monitoring and management of module B1.

[0145] Through the connection between the interconnection interface in module A1 and the interconnection interface in module B1, radio frequency signals, monitoring management data, clock and control signals, etc. can be transmitted between module A1 and module B1.

[0146] In summary, each RF unit 102 is designed by combining two modules with the same structure, wherein the first module is used to complete the functions of the uplink port and the downlink port.

[0147] See also Figure 6A-6B , Fig. 6A A schematic diagram of the structure of a first module in a radio frequency unit provided in an embodiment of the present disclosure, Figure 6B A schematic diagram of the structure of a second module in a radio frequency unit provided in an embodiment of the present disclosure.

[0148] Among the multiple RF units 102 , the first module 1021 and the second module 1022 in one RF unit 102 have different compositions.

[0149] like Fig. 6A As shown, the first module 1021 may include: a third digital baseband submodule 1021-21, a third digital-to-analog conversion submodule 1021-22, a third first power supply submodule 1021-23, a third control submodule 1021-24 and a third interconnection interface 1021-25.

[0150] In the first module 1021, the third digital baseband submodule 1021-21 is respectively connected to the third digital-to-analog conversion submodule 1021-22, the third power supply submodule 1021-23, the third control submodule 1021-24 and the third interconnection interface 1021-25; the third digital-to-analog conversion submodule 1021-22 is also respectively connected to the third power supply submodule 1021-23 and the third control submodule 1021-24; the third interconnection interface 1021-25 is also connected to the fourth interconnection interface 1022-23 in the second module 1022; the third power supply submodule 1021-23 is also connected to the first external power supply 401.

[0151] like Figure 6B As shown, the second module 1022 may include: a fourth power submodule 1022 - 21 , a fourth radio frequency submodule 1022 - 22 and a fourth interconnection interface 1022 - 23 .

[0152] In the second module 1022 , the fourth radio frequency submodule 1022 - 22 is connected to the fourth power submodule 1022 - 21 and the fourth interconnection interface 1022 - 23 respectively; the fourth power submodule 1022 - 21 is also connected to the second external power supply 402 .

[0153] exist Figure 6A-6B Based on the embodiment, combined Figure 6C-6D , the functions of each sub-module in a radio frequency unit 102 are introduced.

[0154] See also Figure 6C-6D , Figure 6C A schematic diagram of data processing in a downlink direction by a radio frequency unit provided in an embodiment of the present disclosure, Fig.6D A schematic diagram of data processing in an uplink direction by a radio frequency unit provided in an embodiment of the present disclosure.

[0155] For ease of description, it is assumed that the first RF unit is one of the RF units 102. Figure 6C-6D In the example, the first radio frequency unit may be marked as RU m , the first radio frequency unit RU m The next level radio unit can be marked as RU m+1 , the first radio frequency unit RU m The first module 1021 in the embodiment may be labeled as module A1, the first radio frequency unit RU m The second module 1022 in the embodiment may be labeled as module B1, and the first radio frequency unit RU m The next level radio frequency unit RU m+1 The first module 1021 in the embodiment may be labeled as module A2, the first radio frequency unit RU m The next level radio frequency unit RU m+1 The second module 1022 in can be labeled as module B2.

[0156] In the downlink direction, the digital baseband submodule in module A1 can parse the protocol such as CPRI or eCPRI of the uplink port of module A1 and obtain the first radio unit RU from the downlink baseband signal. m The first downlink baseband service data I 1 Q 1 , first radio frequency unit RU m The second downlink baseband service data I 2 Q 2 , first radio frequency unit RU m The first downlink monitoring management data IP 11 and the first radio frequency unit RU m Second downlink monitoring management data IP 12 .

[0157] The digital baseband submodule in module A1 can convert the first radio frequency unit RU m The first downlink baseband service data I 1 Q 1 and the first radio frequency unit RU m The second downlink baseband service data I 2 Q 2 Transmitted to the digital-to-analog conversion submodule in module A1.

[0158] The digital baseband submodule in module A1 can convert the first radio frequency unit RU m The first downlink monitoring management data IP 11 and the first radio frequency unit RU m Second downlink monitoring management data IP 12 Transmitted to the control submodule in module A1.

[0159] Furthermore, the digital baseband submodule in the module A1 can transmit the downlink baseband signal to the digital baseband submodule in the module A1 in the next-stage RF unit through the downlink port of the first module A1.

[0160] Among them, the next level radio frequency unit RU m+1 The digital baseband submodule in module A2 and the first radio frequency unit RU m The processing method of the digital baseband submodule in module A1 is the same as that in FIG.

[0161] In addition, when the number of cascaded RF units in multiple RF units is large, the present disclosure can, based on the above principle, divide the IQ baseband service data in the downlink baseband signal into two streams for broadcast and send down, and route and forward the monitoring and management data in the downlink baseband signal according to the IP address configured for each RF unit.

[0162] In the uplink direction, the digital baseband submodule in module A1 can receive the first radio frequency unit RU from the digital-to-analog conversion submodule in module A1. m The first uplink baseband service data (I 1 Q 1 )Book.

[0163] The digital baseband submodule in module A1 can receive the first radio frequency unit RU from the digital-to-analog conversion submodule in module A1. m The second uplink baseband service data (I 2 Q 2 ) 本 .

[0164] The digital baseband submodule in module A1 can receive the first radio frequency unit RU from the control submodule in module A1. m The first uplink monitoring management data IP 11 .

[0165] The digital baseband submodule in module A1 can receive the first radio frequency unit RU from the control submodule in module A1. m Second uplink monitoring management data IP 12 .

[0166] The digital baseband submodule in module A1 can be connected to the next level RF unit RU through the downlink port of module A1. m+1 The digital baseband submodule in module A2 receives the next level radio frequency unit RU m+1 The encapsulated data is sent to the next level RF unit RU m+1 The packaged signal is analyzed to obtain the next level RF unit RU m+1 The first uplink baseband service data (I 1 Q 1 ) 下 , the next level radio frequency unit RU m+1 The second uplink baseband service data (I 2 Q 2 ) 下 , the next level radio frequency unit RU m+1 The first uplink monitoring management data IP 21 and the next level RF unit RU m+1 Second uplink monitoring management data IP 22 .

[0167] Thus, the digital baseband submodule in module A1 can be used to control the first radio frequency unit RU m The first uplink baseband service data (I 1 Q 1 ) 本 and the next level RF unit RU m+1 The first uplink baseband service data is performed (I 1 Q 1 ) 下 superimposed to obtain the first uplink baseband service data after superposition (I 1 Q 1 ) 叠 , that is (I 1 Q 1 ) 叠 =(I 1 Q 1 ) 本 +(I 1 Q 1 ) 下 .

[0168] The digital baseband submodule in module A1 can be used to control the first radio frequency unit RU m The second uplink baseband service data (I 2 Q2 ) 本 and the next level RF unit RU m+1 The second uplink baseband service data (I 2 Q 2 ) 下 The superposition is performed to obtain the superimposed second uplink baseband service data (I 2 Q 2 ) 叠 , that is (I 2 Q 2 ) 叠 =(I 2 Q 2 ) 本 +(I 2 Q 2 ) 下 .

[0169] The digital baseband submodule in module A1 can process the superimposed first uplink baseband service data (I 1 Q 1 ) 叠 , the superimposed second uplink baseband service data (I 2 Q 2 ) 叠 , first radio frequency unit RU m The first uplink monitoring management data IP 11 , first radio frequency unit RU m Second uplink monitoring management data IP 12 , the next level radio frequency unit RU m+1 The first uplink monitoring management data IP 21 and the next level RF unit RU m+1 Second uplink monitoring management data IP 22 Encapsulate into a protocol (such as CPRI or eCPRI) to obtain the first radio unit RU m The encapsulated data is sent to the first RF unit RU m The encapsulated data is transmitted to the digital baseband submodule or the host unit in the first module in the upper-level radio frequency unit through the uplink port of module A1.

[0170] In addition, when the number of cascaded RF units in multiple RF units is large, the present disclosure can divide the IQ baseband service data in the uplink baseband signal into two streams for superposition and reporting based on the above principle, and aggregate the monitoring and management data in the uplink baseband signal and convert and report it.

[0171] In the downlink direction, the digital-to-analog conversion submodule in module A1 converts the digital signal sent by the digital baseband submodule in module A1 into an analog signal, performs up-conversion modulation on the analog signal, and obtains a radio frequency signal transmitted to the radio frequency submodule in module B1. Among them, the digital-to-analog conversion submodule in module A1 transmits the radio frequency signal of the radio frequency submodule to the digital baseband submodule in module A1, and the digital baseband submodule in module A1 transmits it to the radio frequency submodule in module B1 through the first interconnection interface and the second interconnection interface.

[0172] In the uplink direction, the digital-to-analog conversion submodule in module A1 converts the analog signal sent by the radio frequency submodule in module B1 into a digital signal, performs down-conversion modulation on the digital signal, and obtains a digital signal transmitted to the digital baseband submodule in module A1. The radio frequency submodule in module B1 transmits the analog signal to the digital baseband submodule in module A1 through the first interconnection interface and the second interconnection interface, and the digital baseband submodule in module A1 transmits the analog signal to the digital-to-analog conversion submodule in module A1.

[0173] In the downlink direction, the RF submodule in module B1 can receive RF signals from module A1 through two interconnection interfaces (the third interconnection interface and the fourth interconnection interface), amplify and filter the RF signals, and transmit the processed RF signals to terminal 300 through the antenna port.

[0174] In the uplink direction, the RF submodule in module B1 can receive the uplink RF signal from the terminal 300 through the antenna port, filter and amplify the uplink RF signal, and transmit the processed uplink RF signal to module A1 through two interconnection interfaces (the third interconnection interface and the fourth interconnection interface).

[0175] In some embodiments, the RF submodule in module B1 may include at least two downlink RF units and m uplink receiving units, where m is an even number and m>0. The downlink RF unit and the uplink receiving unit are not limited to time division duplex (TDD) and frequency division duplex (FDD) standards.

[0176] The power submodule in the module A1 can receive the power input of the first external power source 401 and supply power to the digital baseband submodule, the digital-to-analog conversion submodule and the control submodule respectively.

[0177] The power submodule in the module B1 can receive power input from the second external power source 402 and supply power to the RF submodule.

[0178] The control submodule in module A1 can complete the power-on process, parameter configuration, software upgrade, monitoring and management of module A1. The control submodule in module B1 can complete the power-on process, parameter configuration, software upgrade, monitoring and management of module B1.

[0179] Through the connection between the interconnection interface in module A1 and the interconnection interface in module B1, radio frequency signals, monitoring management data, clock and control signals, etc. can be transmitted between module A1 and module B1.

[0180] In summary, each radio frequency unit 102 adopts a combination design of two modules, using a digital and radio frequency combination method, wherein the first module is used to complete the functions of the uplink port and the downlink port.

[0181] Based on the description of the aforementioned embodiments, 5G equipment needs to meet certain coverage distance requirements at the working surface of a mine. Considering the power consumption requirements of intrinsically safe equipment, the equipment cannot increase the coverage distance by increasing power in traditional technologies, otherwise the power consumption of the equipment will increase. In order to solve the aforementioned problems, the intrinsically safe communication system 100 for mines disclosed in the present invention controls the transmission power of the downlink RF signal of the RF unit 102 without increasing the transmission power, and at the same time enables the RF unit 102 to meet certain coverage distance requirements.

[0182] Based on the above description, the host unit 101 can be implemented in a variety of ways.

[0183] Next, combine Figure 7 , introduces the specific implementation structure of the host unit 101.

[0184] See also Figure 7 , Figure 7 This is a schematic diagram of the structure of the host unit provided in the embodiment of the present disclosure. Figure 7 As shown, the host unit 101 of the present disclosure may include: a first layer (L1) submodule 101-1, a second layer (L2) submodule 101-2, a third layer (L3) submodule 101-3 and an operation maintenance and control submodule 101-4.

[0185] Among them, the first layer submodule 101-1, the second layer submodule 101-2, and the third layer submodule 101-3 are connected in sequence, the first layer submodule 101-1 and the third layer submodule 101-3 are also connected to the operation maintenance and control submodule 101-4, and the operation maintenance and control submodule 101-4 is also respectively connected to the digital baseband submodules and radio frequency submodules in multiple radio frequency units 102.

[0186] The host unit 101 can complete the processing of each layer (such as L3 / L2 / L1) in the communication protocol, operation and maintenance, communication with the core network 200, and communication with the radio frequency unit 102 based on the first layer submodule 101-1, the second layer submodule 101-2, the third layer submodule 101-3 and the operation maintenance and control submodule 101-4.

[0187] In addition to completing the above functions, the third layer submodule 101-3 can parse the measurement report to obtain field strength information, and transmit the field strength information to the operation maintenance and control submodule 101-4. The operation maintenance and control submodule 101-4 can control the signal bandwidth of the control system 100 to be reduced when the field strength information is less than a preset field strength threshold, that is, adjust the signal bandwidth of the system to a preset signal bandwidth value.

[0188] After the signal bandwidth of the system 100 is reduced, that is, after the signal bandwidth of the system reaches a preset signal bandwidth value, the operation, maintenance and control submodule 101-4 may send a command to instruct to increase the downlink gain to at least one of the first layer submodule 101-1, the digital baseband submodule in the multiple radio frequency units 102 and the radio frequency submodules in the multiple radio frequency units 102.

[0189] Among them, the operation maintenance and control submodule 101-4 sends a command to the first layer submodule 101-1 to instruct to increase the downlink gain, corresponding to Figure 7 The operation maintenance and control submodule 101-4 sends a command for instructing to increase the downlink gain to the digital baseband submodules in the multiple radio frequency units 102, corresponding to Figure 7 The operation maintenance and control submodule 101-4 sends a command for instructing to increase the downlink gain to the RF submodules in the multiple RF units 102, corresponding to Figure 7 The gain control point in is 3.

[0190] After receiving a command for instructing to increase the downlink gain, the first-layer sub-module 101-1, the digital baseband sub-module in the multiple RF units 102, or at least one module in the RF sub-modules can control the total transmission power of the antenna ports of the multiple RF units 102 to increase from the first transmission power value to the preset maximum transmission power value, so that the gain of the downlink corresponding to the first-layer sub-module 101-1 increases.

[0191] Exemplarily, the present disclosure also provides a communication device, which can implement the above Figure 1A-Figure 7 The operation of the host unit in the embodiment, or the communication device can implement the above Figure 1A-Figure 7 The operation of an RF unit corresponding to the embodiment, its specific implementation principle and technical effects can be found in the description of the above embodiment, and will not be repeated in this disclosure.

[0192] Exemplarily, the present disclosure also provides a base station, which can implement the above Figure 1A-Figure 7 The operation of the intrinsically safe communication system for mines in the embodiment, its specific implementation principle and technical effects can be found in the description of the above embodiment, and the present disclosure will not repeat them here.

[0193] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A communication method, It is characterized in that Applied to a base station, the method comprises: Obtain the measurement report reported by the terminal; Parsing the measurement report to obtain field strength information of the downlink radio frequency signal received by the terminal; When the field strength information is less than a preset field strength threshold, adjusting the signal bandwidth of the base station to a preset signal bandwidth value and keeping the number of resources allocated to the terminal unchanged; A command is sent to instruct an increase in the downlink gain of the base station, controlling the total transmit power of the antenna port of the radio frequency unit RU to increase from a current transmit power value to a preset maximum transmit power value; wherein the average power allocated to each resource module of the terminal is adjusted according to the ratio of the maximum transmit power value to the current transmit power.

2. The communication method according to claim 1, It is characterized in that The base station includes a radio frequency unit RU and a host unit AU, and the method further includes: The RU receives an uplink radio frequency signal from the terminal and converts the uplink radio frequency signal into an uplink baseband signal; The RU transmits the uplink baseband signal to the AU, so that the AU converts the uplink baseband signal into an uplink signal and transmits the uplink signal to a core network.

3. The communication method according to claim 2, It is characterized in that The method further comprises: The AU receives a downlink signal from a core network and converts the downlink signal into a downlink baseband signal; The AU transmits the downlink baseband signal to the RU, so that the RU converts the downlink baseband signal into a downlink radio frequency signal and transmits the downlink radio frequency signal to the terminal.

4. A communication device, It is characterized in that Applied to base stations, including: A report reading module is used to obtain the measurement report reported by the terminal; A parsing module, used to parse the measurement report to obtain field strength information in the downlink radio frequency signal received by the terminal; A control module, configured to adjust the signal bandwidth of the base station to a preset signal bandwidth value and keep the number of resources allocated to the terminal unchanged when the field strength information is less than a preset field strength threshold; A sending increase module is used to send a command for indicating an increase in the downlink gain of the base station, controlling the total transmission power of the antenna port of the radio frequency unit RU to increase from a current transmission power value to a preset maximum transmission power value; wherein the average power allocated to each resource module of the terminal is adjusted according to the ratio of the maximum transmission power value to the current transmission power.

5. An intrinsically safe communication system for mines, It is characterized in that include: The host unit AU and multiple radio frequency units RU, the intrinsically safe communication system for mines is used to execute the communication method described in any one of claims 1 to 3.

6. The system according to claim 5, It is characterized in that The AU is deployed on the non-working surface of the mine and the multiple RUs are deployed on the working surface of the mine; the multiple RUs are connected in multi-stage cascade via optical fibers, and the AU is connected to the multiple RUs via optical fibers; each RU is connected by a first external power supply and a second external power supply that are not in the same ground, and the sum of the actual power consumption of the first external power supply and the actual power consumption of the second external power supply is greater than the power consumption threshold of the intrinsically safe power supply, and the maximum power consumption values ​​of the first external power supply and the second external power supply are both less than or equal to the power consumption threshold of the intrinsically safe power supply.

7. The system according to claim 6, It is characterized in that Each of the RUs includes a first module and a second module, the uplink port of the first module is connected to the downlink port of the first module in the upper-level RU or the AU, the downlink port of the first module is connected to the uplink port of the first module in the lower-level RU, the first module is powered by the first external power supply, and the second module is powered by the second external power supply.

8. The system according to claim 7, It is characterized in that The first module includes: a first digital baseband submodule, a first digital-to-analog conversion submodule, a first radio frequency submodule, a first power supply submodule, a first control submodule and a first interconnection interface; In the first module, the first digital baseband submodule is respectively connected to the first digital-to-analog conversion submodule, the first power supply submodule, the first control submodule and the first interconnection interface; the first digital-to-analog conversion submodule is also respectively connected to the first radio frequency submodule, the first power supply submodule and the first control submodule; the first radio frequency submodule is also respectively connected to the first power supply submodule and the first control submodule; the first interconnection interface is also connected to the second interconnection interface in the second module; the first power supply submodule is also connected to the first external power supply.

9. The system according to claim 7, It is characterized in that The second module includes: a second digital baseband submodule, a second digital-to-analog conversion submodule, a second radio frequency submodule, a second power supply submodule, a second control submodule and a second interconnection interface; In the second module, the second digital baseband submodule is respectively connected to the second digital-to-analog conversion submodule, the second power supply submodule, the second control submodule and the second interconnection interface; the second digital-to-analog conversion submodule is also respectively connected to the second radio frequency submodule, the second power supply submodule and the second control submodule; the second radio frequency submodule is also respectively connected to the second power supply submodule and the second control submodule; the second interconnection interface is also connected to the first interconnection interface in the first module; the second power supply submodule is also connected to the second external power supply.

10. The system according to claim 7, It is characterized in that The first module includes: a third digital baseband submodule, a third digital-to-analog conversion submodule, a third power supply submodule, a third control submodule and a third interconnection interface; In the first module, the third digital baseband submodule is respectively connected to the third digital-to-analog conversion submodule, the third power supply submodule, the third control submodule and the third interconnection interface; the third digital-to-analog conversion submodule is also respectively connected to the third power supply submodule and the third control submodule; the third interconnection interface is also connected to the fourth interconnection interface in the second module; the third power supply submodule is also connected to the first external power supply.

11. The system according to claim 7, It is characterized in that The second module includes: a fourth power submodule, a fourth radio frequency submodule and a fourth interconnection interface; In the second module, the fourth radio frequency submodule is connected to the fourth power submodule and the fourth interconnection interface respectively; the fourth power submodule is also connected to the second external power supply.

12. The system according to claim 8, It is characterized in that The first radio frequency submodule includes 1 downlink radio frequency unit and k uplink receiving units, where k is a positive integer.

13. The system according to claim 9, It is characterized in that The second radio frequency submodule includes one downlink radio frequency unit and n uplink receiving units, where n is a positive integer.

14. The system according to claim 11, It is characterized in that The fourth radio frequency submodule includes at least two downlink radio frequency units and m uplink receiving units, where m is an even number greater than 0.

15. The system according to claim 5, It is characterized in that The AU includes: a first layer submodule, a second layer submodule, a third layer submodule and an operation maintenance and control submodule, wherein the first layer submodule, the second layer submodule and the third layer submodule are connected in sequence, the first layer submodule and the third layer submodule are also connected to the operation maintenance and control submodule, and the operation maintenance and control submodule is also respectively connected to the digital baseband submodule and the radio frequency submodule in the plurality of RUs; The third layer submodule is used to parse the received measurement report to obtain field strength information, and transmit the field strength information to the operation, maintenance and control submodule; The operation maintenance and control submodule is used to adjust the signal bandwidth of the system to a preset signal bandwidth value when the field strength information is less than a preset field strength threshold; after the signal bandwidth of the system reaches the preset signal bandwidth value, send a command for instructing to increase the downlink gain to at least one of the first layer submodule, the digital baseband submodules in the multiple RUs, and the radio frequency submodules in the multiple RUs; At least one of the first layer submodule, the digital baseband submodule or the radio frequency submodule is used to control the total transmit power of the antenna ports of the multiple RUs to increase from the current transmit power value to a preset maximum transmit power value after receiving the command.

16. The system according to claim 5, It is characterized in that The AU is connected to the first-level RU among the multiple RUs via an optical fiber; Alternatively, the AU is connected to the first-stage RU and the last-stage RU in the multiple RUs through optical fibers; Alternatively, the multiple RUs constitute a first cascade chain and a second cascade chain, each cascade chain includes at least two RUs; the AU is connected to the first-level RU in the first cascade chain through optical fiber, and the AU is connected to the first-level RU and the last-level RU in the second cascade chain through optical fiber.

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