CN218162875U - Integrated near field broadcasting equipment based on LTE technology - Google Patents
Integrated near field broadcasting equipment based on LTE technology Download PDFInfo
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- CN218162875U CN218162875U CN202222243993.8U CN202222243993U CN218162875U CN 218162875 U CN218162875 U CN 218162875U CN 202222243993 U CN202222243993 U CN 202222243993U CN 218162875 U CN218162875 U CN 218162875U
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Abstract
The utility model adopts the technical proposal that: an integrated near field broadcast device based on an LTE technology comprises an LTE base station and a plurality of sub-devices; the LTE base station is integrated with a master private network module; a signal receiving and transmitting port of the LTE base station is electrically connected with the main private network module; each sub-device is integrated with a sub-private network module; the signal receiving and transmitting port of the sub-equipment is electrically connected with the sub-private network module; the main private network module is wirelessly connected with each sub private network module; any one of the sub-devices sends a signal to the LTE base station through the corresponding sub-private network module and the main private network module; the LTE base station sends the signals received from any one of the sub-devices to all the sub-devices through the main private network module and the sub-private network module corresponding to each sub-device. The utility model discloses under the condition of no network condition, make the equipment that is located different geographical position form the wireless local area network that can carry out the information interaction.
Description
Technical Field
The utility model belongs to the technical field of wireless LAN, concretely relates to integration near field broadcasting equipment based on LTE technique.
Background
Based on the modular design concept of equipment platforms such as sea, subway, tunnel, mine, oil, port, armed police, civil air defense and emergency, the work sites of all departments are far apart, and the timeliness requirement for information acquisition is obvious during cooperative work. In recent years, the demand of operators for obtaining logging information is increased sharply, and the logging system comprises an IFS (information processing system) land information terminal, a television release of a logging screen and a mobile terminal of an operator besides a client workstation in the logging system.
As equipment platforms such as offshore, subway, tunnel, mine, petroleum, port, armed police, civil air defense and emergency are generally positioned in the geographic environment with no network, limited coverage of WIFI signal and unstable network signal, the broadband wireless network of the platform cannot be effectively covered, and the mobile handheld terminal and the PC end used by the operating personnel cannot establish the wireless local area network, thereby directly influencing the information transmission and acquisition of the operating personnel in each party.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of above-mentioned background art existence, provide an integration near field broadcast equipment based on LTE technique, under the condition of no network condition, make the equipment that is located different geographical position form and to carry out the wireless local area network of information interaction.
The utility model adopts the technical proposal that: an integrated near field broadcast device based on an LTE technology comprises an LTE base station and a plurality of sub-devices; the LTE base station is integrated with a master private network module; a signal receiving and transmitting port of the LTE base station is electrically connected with the main private network module; each sub-device is integrated with a sub-private network module; the signal receiving and transmitting port of the sub-equipment is electrically connected with the sub-private network module; the main private network module is wirelessly connected with each sub private network module; any one of the sub-devices sends a signal to the LTE base station through the corresponding sub-private network module and the main private network module; the LTE base station sends the signals received from any one of the sub-devices to all the sub-devices through the main private network module and the sub-private network module corresponding to each sub-device.
In the above technical solution, the main private network module includes a first radio frequency subsystem and a first baseband subsystem; the signal end of the first baseband subsystem is respectively and electrically connected with the signal transceiving port of the LTE base station and the signal end of the first radio frequency subsystem; and the signal receiving and transmitting end of the first radio frequency subsystem is wirelessly connected with each private network sub-module.
In the above technical solution, the private sub-network module includes a second radio frequency subsystem and a second baseband subsystem; the signal end of the second baseband subsystem is respectively and electrically connected with the signal transceiving port of the corresponding sub-equipment and the signal end of the second radio frequency subsystem; and the signal receiving and transmitting end of the second radio frequency subsystem is wirelessly connected with the signal receiving and transmitting end of the first radio frequency subsystem.
In the above technical solution, the first baseband subsystem and the second baseband subsystem have the same structure and each include an FPGA module, a first DSP module, a second DSP module, and a CPU module; the signal end of the CPU module is electrically connected with the signal transceiving port of the corresponding sub-equipment or the LTE base station; the signal end of the CPU module is respectively and electrically connected with the signal ends of the first DSP module and the second DSP module; the signal end of the FPGA module is respectively and electrically connected with the signal ends of the first DSP module and the second DSP module; the signal end of the FPGA module is electrically connected with the first radio frequency subsystem or the second radio frequency subsystem; the first DSP module and the second DSP module are electrically connected with each other.
In the above technical solution, the first rf subsystem and the second rf subsystem have the same structure and both include a digital signal processing unit and an rf signal processing unit; the digital signal processing unit is electrically connected with the signal end of the FPGA module; the digital signal processing unit is electrically connected with the radio frequency signal processing unit; and the radio frequency signal processing units positioned on different sub-devices are wirelessly connected with the radio frequency signal processing unit positioned on the LTE base station.
In the above technical solution, the digital signal processing unit includes a microprocessor and a digital processor electrically connected to each other; the signal ends of the microprocessor and the digital processor are electrically connected with the signal receiving and transmitting ports of the corresponding sub-equipment or the LTE base station; and the receiving port and the transmitting port of the digital signal processor are electrically connected with the radio frequency signal processing unit.
In the above technical solution, the radio frequency signal processing unit includes a digital-to-analog converter, an analog-to-digital converter, a radio frequency transceiver, a power amplifier, a low noise amplifier, a filter, and a signal transceiver; the input end of the digital-to-analog converter is electrically connected with the transmitting port of the digital signal processor, and the output end of the digital-to-analog converter is electrically connected with the input end of the radio frequency transceiver; the output end of the analog-to-digital converter is electrically connected with the receiving port of the digital signal processor, and the input end of the analog-to-digital converter is electrically connected with the output end of the digital radio frequency transceiver; the input end of the radio frequency transceiver is electrically connected with the output end of the low noise amplifier; the input end of the low-noise amplifier is electrically connected with the filter; the output end of the radio frequency transceiver is electrically connected with the input end of the power amplifier; the output end of the power amplifier is electrically connected with the filter; the filter is electrically connected with the signal transceiving equipment.
In the above technical solution, the power divider and the antenna are further included; the main networking module is electrically connected with the power divider; the antenna is electrically connected with the power divider.
The utility model has the advantages that: the utility model provides a wide-band wireless network coverage solution for the fields of sea, subway, tunnel, mine, petroleum, port, armed police, civil air defense, emergency and the like, meets the requirements of on-site explosion-proof operation, and realizes the construction of safe and stable wireless local area network; the wireless local area network establishes connection between each handheld terminal device and each logging house device, realizes support of multiple services under a unified platform, realizes cooperative office of each department, can meet the requirements of the market on new technology and new services, and has good expansibility. The utility model discloses one set of near field digital broadcasting system has been established, portable, the portable information interaction of being convenient for can further enlarge the applied scene of logging data. The utility model integrates the private network module on the existing LTE base station and the sub-equipment scattered at different positions; a local area network is formed through a private network module, and an LTE base station serves as an information transfer station to forward signals transmitted by any one piece of sub-equipment to all the pieces of sub-equipment, so that a near field broadcast function is realized. The utility model discloses a private network module realizes the overall process of signal conversion, transmission, receipt, guarantees the stability of its wireless local area network of constituteing.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a private network module;
FIG. 3 is a schematic diagram of a baseband subsystem;
FIG. 4 is a schematic diagram of a radio frequency subsystem;
fig. 5 is a schematic diagram of an internal module of an LTE base station;
fig. 6 is a schematic diagram of an LTE base station enclosure.
The system comprises a 1-LTE base station shell and a 2-interface board.
Detailed Description
The invention will be further described in detail with reference to the drawings and the following detailed description, which are provided for the purpose of clearly understanding the invention and are not intended to limit the invention.
As shown in fig. 1, the utility model relates to an integrated near field broadcasting equipment based on LTE technology, including LTE basic station and a plurality of sub-equipment; the LTE base station is integrated with a master private network module; a signal transceiving port of the LTE base station is electrically connected with the main private network module; each sub-device is integrated with a sub-private network module; the signal receiving and transmitting port of the sub-equipment is electrically connected with the sub-private network module; the main private network module is wirelessly connected with each sub private network module; any one of the sub-devices sends a signal to the LTE base station through the corresponding sub-private network module and the main private network module; the LTE base station sends the signals received from any one of the sub-devices to all the sub-devices through the main private network module and the sub-private network module corresponding to each sub-device. The power divider and the antenna are also included; the main networking module is electrically connected with the power divider; the antenna is electrically connected with the power divider. The sub-devices include handheld terminal devices (such as mobile phones and the like), instrument devices (such as computers) in logging rooms and the like.
Specifically, the signal generated by the sub-device is transmitted to the LTE base station through the sub-private network module. The LTE base station receives signals from the sub-equipment through the antenna, the power divider and the main networking module, then broadcasts the signals to all the sub-equipment through the main networking module, and the power divider divides one path of signals into multiple paths and sends the multiple paths of signals to each sub-private network module through the antenna. And the sub private network module feeds the received signal back to the corresponding sub equipment.
The main private network module is basically consistent with the internal modules of the sub private network module. As shown in fig. 2, the main private network module includes a first radio frequency subsystem and a first baseband subsystem; the signal end of the first baseband subsystem is respectively and electrically connected with the signal transceiving port of the LTE base station and the signal end of the first radio frequency subsystem; and the signal receiving and transmitting end of the first radio frequency subsystem is wirelessly connected with each sub private network module.
Specifically, the first radio frequency subsystem is integrated on a power amplifier digital board, and the first baseband subsystem is integrated on a BBU mainboard; the power amplifier digital board and the BBU main board are integrated inside the LTE base station shell 1. As shown in fig. 5 and 6, an interface board 2 is configured on the LTE base station housing 1, and a power supply of the LTE base station, a port for implementing the function of the LTE base station, and a port of the primary private network module, which are electrically connected to the power divider, are integrated on the interface board.
As shown in fig. 2, the sub-private network module includes a second radio frequency subsystem and a second baseband subsystem; the signal end of the second baseband subsystem is respectively and electrically connected with the signal transceiving port of the corresponding sub-equipment and the signal end of the second radio frequency subsystem; and the signal receiving and transmitting end of the second radio frequency subsystem is wirelessly connected with the signal receiving and transmitting end of the first radio frequency subsystem.
Specifically, the second radio frequency subsystem is integrated on a power amplifier digital board, and the second baseband subsystem is integrated on a BBU mainboard; and the power amplifier digital board and the BBU main board are integrated in the shell of the sub-equipment.
In the above technical solution, the first baseband subsystem and the second baseband subsystem have the same structure and each include an FPGA module, a first DSP module, a second DSP module, and a CPU module; the GE interface of the CPU module is electrically connected with the corresponding signal receiving and transmitting port of the sub-equipment or the LTE base station; an SGMII interface of the CPU module is electrically connected with signal ends of the first DSP module and the second DSP module respectively; the SRIO interface of the FPGA module is respectively and electrically connected with the SRIO interfaces of the first DSP module and the second DSP module; the SESDES interface of the FPGA module is electrically connected with the first radio frequency subsystem or the second radio frequency subsystem; the first DSP module and the second DSP module are electrically connected with each other to realize interactive communication.
The first baseband subsystem and the second baseband subsystem are mainly composed of a multi-core CPU, a high-performance DSP, an FPGA module, and the like, and complete processing of a corresponding physical layer and an MAC layer of the system, and exchange IQ data between the radio frequency processing module and the baseband processing is implemented, as shown in fig. 3.
The first DSP module and the second DSP module are responsible for uplink signal processing and mainly comprise channel estimation, joint detection, interference elimination, matched filtering, physical layer measurement, synchronization, power control, an intelligent antenna, frequency offset compensation, soft decision and the like. The symbol level processing mainly comprises functions of physical channel demapping, demultiplexing, deinterleaving, reverse rate matching, turbo/Viterbi decoding, CRC (cyclic redundancy check) decoding and the like. The two DSPs are used in a peer-to-peer manner and process mapping data from different antennas.
The FPGA module is mainly responsible for part of downlink direction processing and interface management of a baseband, and the downlink direction chip level processing comprises the functions of SS (SS, transmit power control) filling, spread spectrum modulation, burst formation, power weighting, physical channel combination, dwPTS (digital time to transmit) processing and the like. symbol level processing includes CRC, channel coding, interleaving, multiplexing, scrambling, physical channel mapping, etc. The above functions are all realized by the existing software functions.
The CPU module system is responsible for signaling processing, and completes communication management among modules and control and processing of services.
The first baseband subsystem and the second baseband subsystem formed by the FPGA module, the first DSP module, the second DSP module and the CPU module are baseband signal processing systems of equipment (LTE base station and sub-equipment), such as a mobile phone or a baseband chip of logging house instrument equipment. The baseband signal processing system realizes the functions through the existing software program and is used for data transmission and conversion. The utility model discloses utilize equipment body from the baseband radio frequency signal processing system in area to realize above-mentioned function, need not to make the modification to equipment body's built-in procedure.
As shown in fig. 4, the first rf subsystem and the second rf subsystem have the same structure and both include a digital signal processing unit and an rf signal processing unit; the radio frequency processing unit is responsible for receiving, transmitting and processing wireless signals, and the digital signal processing unit is responsible for processing digital signals and receiving and transmitting data. The digital signal processing unit is electrically connected with the signal end of the FPGA module; the digital signal processing unit is electrically connected with the radio frequency signal processing unit; and the radio frequency signal processing units positioned on different sub-devices are wirelessly connected with the radio frequency signal processing unit positioned on the LTE base station.
In the above technical solution, the digital signal processing unit includes a microprocessor and a digital processor electrically connected to each other; the signal ends of the microprocessor and the digital processor are electrically connected with the corresponding sub-equipment or the signal transceiving port of the LTE base station through the corresponding baseband subsystem; and the receiving port and the transmitting port of the digital signal processor are electrically connected with the radio frequency signal processing unit.
In the above technical solution, the radio frequency signal processing unit includes a digital-to-analog converter, an analog-to-digital converter, a radio frequency transceiver, a power amplifier, a low noise amplifier, a filter, and a signal transceiver; the input end of the digital-to-analog converter is electrically connected with the transmitting port of the digital signal processor, and the output end of the digital-to-analog converter is electrically connected with the input end of the radio frequency transceiver; the output end of the analog-to-digital converter is electrically connected with the receiving port of the digital signal processor, and the input end of the analog-to-digital converter is electrically connected with the output end of the digital radio frequency transceiver; the input end of the radio frequency transceiver is electrically connected with the output end of the low noise amplifier; the input end of the low noise amplifier is electrically connected with the filter; the output end of the radio frequency transceiver is electrically connected with the input end of the power amplifier; the output end of the power amplifier is electrically connected with the filter; the filter is electrically connected with the signal transceiving equipment.
For the transmission link, the digital processing unit receives the digital signal sent by the baseband subsystem from the optical fiber and decomposes the digital signal: and sending the control signal to a microprocessor and sending the service data to a digital signal processor. The microprocessor debugs the digital signal processor based on the control signal. The digital signal processor carries out digital up-conversion, filtering and other processing on the downlink data, and sends the downlink data to a digital-to-analog converter of the radio frequency processing unit through a transmitting channel. The digital-to-analog converter firstly converts a digital signal into an analog signal, and sends the analog signal to a Power Amplifier (PA) and a filter through a radio frequency transceiver for amplification and filtering, and then sends the signal to an LTE base station or a sub-device through a signal transceiver device. Each device on the transmitting link processes data, so that the transmitted signal can be received by a private network module of the LTE base station or the sub-device.
For a receiving link, two paths of receiving signals are firstly filtered through a filter, then amplified through a Low Noise Amplifier (LNA), sent to an analog-to-digital converter through a radio frequency transceiver and then converted into digital signals through the analog-to-digital converter; the digital signal processing unit is responsible for carrying out up-conversion and digital filtering processing on the digital signals, converting the digital signals into corresponding formats and sending the digital signals to the baseband subsystem, and the baseband subsystem exchanges IQ data between the radio frequency system and baseband processing of corresponding equipment.
Those not described in detail in this specification are well within the skill of the art.
Claims (8)
1. An integrated near field broadcast device based on LTE technology, characterized in that: the LTE base station comprises an LTE base station and a plurality of sub-devices; the LTE base station is integrated with a main private network module; a signal receiving and transmitting port of the LTE base station is electrically connected with the main private network module; each sub-device is integrated with a sub-private network module; the signal receiving and transmitting port of the sub-equipment is electrically connected with the sub-private network module; the main private network module is wirelessly connected with each sub private network module; any one of the sub-devices sends a signal to the LTE base station through the corresponding sub-private network module and the main private network module; the LTE base station sends the signals received from any one of the sub-devices to all the sub-devices through the main private network module and the sub-private network module corresponding to each sub-device.
2. The integrated near-field broadcast device based on the LTE technology as claimed in claim 1, wherein: the main private network module comprises a first radio frequency subsystem and a first baseband subsystem; the signal end of the first baseband subsystem is respectively and electrically connected with the signal transceiving port of the LTE base station and the signal end of the first radio frequency subsystem; and the signal receiving and transmitting end of the first radio frequency subsystem is wirelessly connected with each private network sub-module.
3. The integrated near-field broadcast device based on the LTE technology as claimed in claim 2, wherein: the private sub-network module comprises a second radio frequency subsystem and a second baseband subsystem; the signal end of the second baseband subsystem is respectively and electrically connected with the signal transceiving port of the corresponding sub-equipment and the signal end of the second radio frequency subsystem; and the signal receiving and transmitting end of the second radio frequency subsystem is wirelessly connected with the signal receiving and transmitting end of the first radio frequency subsystem.
4. The integrated near-field broadcast device based on the LTE technology of claim 3, wherein: the first baseband subsystem and the second baseband subsystem have the same structure and respectively comprise an FPGA module, a first DSP module, a second DSP module and a CPU module; the signal end of the CPU module is electrically connected with the signal transceiving port of the corresponding sub-equipment or the LTE base station; the signal end of the CPU module is respectively and electrically connected with the signal ends of the first DSP module and the second DSP module; the signal end of the FPGA module is respectively and electrically connected with the signal ends of the first DSP module and the second DSP module; the signal end of the FPGA module is electrically connected with the first radio frequency subsystem or the second radio frequency subsystem; the first DSP module and the second DSP module are mutually and electrically connected.
5. The integrated near-field broadcast device based on LTE technology of claim 4, wherein: the first radio frequency subsystem and the second radio frequency subsystem have the same structure and comprise a digital signal processing unit and a radio frequency signal processing unit; the digital signal processing unit is electrically connected with the signal end of the FPGA module; the digital signal processing unit is electrically connected with the radio frequency signal processing unit; and the radio frequency signal processing units positioned on different sub-devices are wirelessly connected with the radio frequency signal processing unit positioned on the LTE base station.
6. The integrated near-field broadcast device based on the LTE technology of claim 5, wherein: the digital signal processing unit comprises a microprocessor and a digital processor which are electrically connected with each other; the signal ends of the microprocessor and the digital processor are electrically connected with the signal transceiving ports of the corresponding sub-equipment or the LTE base station; and the receiving port and the transmitting port of the digital signal processor are electrically connected with the radio frequency signal processing unit.
7. The integrated near-field broadcast device based on the LTE technology of claim 6, wherein: the radio frequency signal processing unit comprises a digital-to-analog converter, an analog-to-digital converter, a radio frequency transceiver, a power amplifier, a low noise amplifier, a filter and signal transceiving equipment; the input end of the digital-to-analog converter is electrically connected with the transmitting port of the digital signal processor, and the output end of the digital-to-analog converter is electrically connected with the input end of the radio frequency transceiver; the output end of the analog-to-digital converter is electrically connected with the receiving port of the digital signal processor, and the input end of the analog-to-digital converter is electrically connected with the output end of the digital radio frequency transceiver; the input end of the radio frequency transceiver is electrically connected with the output end of the low noise amplifier; the input end of the low-noise amplifier is electrically connected with the filter; the output end of the radio frequency transceiver is electrically connected with the input end of the power amplifier; the output end of the power amplifier is electrically connected with the filter; the filter is electrically connected with the signal transceiving equipment.
8. The integrated near-field broadcast device based on the LTE technology as claimed in claim 1, wherein: the power divider and the antenna are also included; the main private network module is electrically connected with the power divider; the antenna is electrically connected with the power divider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202222243993.8U CN218162875U (en) | 2022-08-25 | 2022-08-25 | Integrated near field broadcasting equipment based on LTE technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222243993.8U CN218162875U (en) | 2022-08-25 | 2022-08-25 | Integrated near field broadcasting equipment based on LTE technology |
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| CN218162875U true CN218162875U (en) | 2022-12-27 |
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| CN202222243993.8U Active CN218162875U (en) | 2022-08-25 | 2022-08-25 | Integrated near field broadcasting equipment based on LTE technology |
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