WO2021212690A1 - Public safety wireless network coverage enhanced distributed system - Google Patents

Public safety wireless network coverage enhanced distributed system Download PDF

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Publication number
WO2021212690A1
WO2021212690A1 PCT/CN2020/107147 CN2020107147W WO2021212690A1 WO 2021212690 A1 WO2021212690 A1 WO 2021212690A1 CN 2020107147 W CN2020107147 W CN 2020107147W WO 2021212690 A1 WO2021212690 A1 WO 2021212690A1
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Prior art keywords
coupler
main control
input port
control unit
module
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PCT/CN2020/107147
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French (fr)
Chinese (zh)
Inventor
张晖
宋健
林福强
郭志伟
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广州市瀚云信息技术有限公司
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Publication of WO2021212690A1 publication Critical patent/WO2021212690A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow

Definitions

  • the present invention relates to the field of communication technology, and more specifically, to a distributed system with enhanced coverage of a public safety wireless network.
  • Public safety wireless network refers to a communication network dedicated to firefighting and emergency. It is used for dedicated communication in fire alarm and other industries. In North America, it is mainly P25 wireless communication network, and in Asia-Pacific and Europe, it is mainly 800MHz trunking network. In many countries and regions, there are some mandatory requirements for the coverage of such networks. Due to the wall of the building, the signal transmitted by the public safety wireless network base station is seriously attenuated after entering the room, and the signal strength cannot meet the requirements for the indoor depth area.
  • a two-way amplifier (BDA) is generally used as a signal source, and the signal is amplified and forwarded into the indoor passive distribution system (DAS), and various indoor areas are covered by antennas. Due to the limited output power of the two-way amplifier, the supported passive network is small. If the power of the two-way amplifier is increased, the cost of the product will increase significantly, and the power consumption of the device will also increase significantly, making the cost of the backup power system of the device also Significantly improved. On the other hand, for such important coverage scenarios, there is currently a lack of monitoring on whether the antenna is normally connected. This brings challenges to the reliability of the distributed system when it is used unexpectedly.
  • the purpose of the present invention is to provide a public safety wireless network coverage enhanced distribution system. Under the condition that the source power remains unchanged, since the coverage unit has an amplifying function, it can increase the signal coverage and support more antenna access. At the same time, it also has the function of real-time monitoring of distributed nodes, which improves the monitorability and maintainability of the coverage system.
  • a public safety wireless network coverage enhanced distribution system including a main control unit and a plurality of coverage units, the input port of the main control unit is connected to the source output port , The output port of the main control unit is connected to the input ports of a plurality of covering units through a passive distribution network;
  • the main control unit includes a coupler and a first active RFID module, and the input port of the coupler serves as the main control
  • the input port of the unit, the output port of the coupler is used as the output port of the main control unit, and the coupling end of the coupler is connected to the first active RFID module;
  • the covering unit includes a bidirectional amplifying module, a second active RFID module and a covering antenna
  • the input port of the bidirectional amplifying module is used as the input port of the covering unit, the output port of the bidirectional amplifying module is connected to the input port of the covering antenna, and the second active RFID module is connected to the input port of the bidirectional amplifying module.
  • the bidirectional amplifying module includes an input end coupler, a downlink amplifier, an output end coupler, and an uplink amplifier.
  • the input port of the input end coupler serves as the input port of the bidirectional amplifier module, and the output port of the input end coupler is The input port of the downstream amplifier is connected, the output port of the downstream amplifier is connected to the input port of the output coupler, the output port of the output coupler is used as the output port of the bidirectional amplifier module, and the coupling end of the output coupler is connected to the input end of the upstream amplifier Connected, the output end of the upstream amplifier is connected to the coupling end of the input end coupler.
  • the passive distribution network is composed of coaxial cables.
  • the output port of the main control unit feeds power to the cover unit at the end of the passive distribution network through a first DC biaser, and both the second active RFID module and the bidirectional amplifying module are biased by a second DC
  • the inverter takes power from the input terminal of the cover unit.
  • the second active RFID module is provided with a temperature sensor.
  • the present invention proposes an enhanced distribution system for indoor distributed coverage of public safety networks.
  • the coverage unit has an amplifying function, it can increase the signal coverage and support more antenna access.
  • the coverage unit has added a second active RFID module and temperature sensor, the main control unit can learn the status of each coverage end in the coverage network by querying the presence status of the coverage unit, achieving the effect of real-time monitoring of network connections.
  • the ambient temperature around each coverage unit can be obtained, and the occurrence of fires and other situations can be warned in advance.
  • Figure 1 is a prior art public safety wireless network signal coverage scheme.
  • Fig. 2 is a schematic diagram of a distributed system with enhanced coverage of a public safety wireless network according to the present invention.
  • Fig. 3 is a schematic diagram of the main control unit in the present invention.
  • Fig. 4 is a schematic diagram of the covering unit in the present invention.
  • Figure 5 is a schematic diagram of the bidirectional amplifying module in the covering unit of the present invention.
  • Fig. 6 is a block diagram of an embodiment of the present invention.
  • the present invention provides a public safety wireless network coverage enhanced distribution system, including a main control unit 1 and a plurality of coverage units 2, the input port of the main control unit 1 is connected to the output port of the source 4 The output port of the main control unit 1 is connected to the input ports of multiple covering units 2 through a passive distribution network 3 composed of coaxial cables.
  • the main control unit 1 includes a coupler 10 and a first active RFID module 11.
  • the input port of the coupler 10 is used as the input port of the main control unit 1, and the output port of the coupler 10 is used as the main control unit.
  • the output port of the unit 1 and the coupling end of the coupler 10 are connected to the first active RFID module 11.
  • the coupler 10 and the first active RFID module 11 can be selected in the prior art as required.
  • the covering unit 2 includes a bidirectional amplifying module 20, a second active RFID module 21 and a covering antenna 22, the input port of the bidirectional amplifying module 20 is used as the input port of the covering unit 2, and the bidirectional amplifying module 20 The output port is connected to the input port of the cover antenna 22, and the second active RFID module 21 is connected to the input port of the bidirectional amplifying module 20.
  • the bidirectional amplifying module 20, the second active RFID module 21, and the covering antenna 22 can be selected in the prior art as required.
  • the bidirectional amplifying module 20 includes an input end coupler 200, a downlink amplifier 201, an output end coupler 202, and an uplink amplifier 203.
  • the input port of the input end coupler 200 is used as the input port of the bidirectional amplifier module 20.
  • the output port of the input coupler 200 is connected to the input port of the downstream amplifier 201, the output port of the downstream amplifier 201 is connected to the input port of the output coupler 202, and the output port of the output coupler 202 is used as the output of the bidirectional amplifier module 20 Port, the coupling end of the output coupler 202 is connected to the input end of the uplink amplifier 203, and the output end of the uplink amplifier 203 is connected to the coupling end of the input end coupler 200.
  • the input coupler 200, the downstream amplifier 201, the output coupler 202, and the upstream amplifier 203 can be selected in the prior art as required.
  • the output port of the main control unit 1 feeds power to the cover unit 2 at the end of the passive distribution network 3 through the first DC biaser (BiasT), and the second active RFID module 21 Both the bidirectional amplifying module 20 and the bidirectional amplifying module 20 obtain power from the input terminal of the covering unit 2 through the second DC biaser (BiasT).
  • the second active RFID module 21 is equipped with a temperature sensor, which can obtain the ambient temperature around each covering unit, and warn in advance the occurrence of fire and other situations.
  • a specific application of this embodiment includes a main control unit and four covering units, and the main control unit and the four covering units are connected by a coaxial cable of a passive distribution system.
  • the signal source 4 uses a 700/800MHz signal source (two-way amplifier)
  • the coupler 10 uses a 800MHz-1000MHz signal coupler
  • the first active RFID module 11 uses a 915MHz active RFID module and a two-way amplifier module.
  • the 20700/800MHz two-way amplification module is selected
  • the second active RFID module is the 915MHz active RFID module.
  • the 915MHz active RFID module has a temperature sensor that can detect the air temperature near the covering unit.
  • the output power of the 700/800MHz signal source (bidirectional amplifier) is 30 dBm, and the loss of the passive distributed system is 30 dB.
  • the coverage end adds the active two-way amplification function to cover The end gain is generally designed to be 15dB, then using the same 700/800MHz source two-way amplifier, the transmit power of the signal reaching the coverage end antenna is increased by 15dB compared with the traditional scheme, reaching 15dBm, which improves the antenna coverage and signal strength.
  • the covering unit of the present invention communicates with the 915MHz active RFID module of the main control unit through the 915MHz active RFID module, and reports the ID information and temperature sensor information of the covering unit.
  • the main control unit queries the information of each covering unit.
  • Information summary can determine the presence of each covering unit.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Disclosed is a public safety wireless network coverage enhanced distributed system, comprising a main control unit and a plurality of coverage units. An input port of the main control unit is connected to a signal source output port, and an output port of the main control unit is connected to input ports of the plurality of coverage units by means of a passive distribution network; the main control unit comprises a coupler and a first active RFID module, an input port of the coupler serves as an input port of the main control unit, an output port of the coupler serves as an output port of the main control unit, and a coupling port of the coupler is connected to the first active RFID module; the coverage unit comprises a bidirectional amplification module, a second active RFID module and a coverage antenna, an input port of the bidirectional amplification module serves as an input port of the coverage unit, an output port of the bidirectional amplification module is connected to an input port of the coverage antenna, and the second active RFID module is connected to an input port of the bidirectional amplification module. The present invention can improve the coverage range of signals and support access of more antennas.

Description

一种公共安全无线网络覆盖增强型分布系统An enhanced distribution system for public safety wireless network coverage 技术领域Technical field
本发明涉及通信技术领域，更具体地说，特别涉及一种公共安全无线网络覆盖增强型分布系统。The present invention relates to the field of communication technology, and more specifically, to a distributed system with enhanced coverage of a public safety wireless network.
背景技术Background technique
公共安全无线网络是指消防和应急专用的通信网络。用于在火警等行业的专用通信，在北美，主要是P25制式的无线通信网络，在亚太和欧洲等区域，主要是800MHz集群网络。在很多国家和地区，这类网络的覆盖是有一些强制性要求的。由于建筑物的墙体阻隔，公共安全无线网络基地台发射的信号进入到室内后衰减严重，信号强度无法满足对室内深度区域的要求。Public safety wireless network refers to a communication network dedicated to firefighting and emergency. It is used for dedicated communication in fire alarm and other industries. In North America, it is mainly P25 wireless communication network, and in Asia-Pacific and Europe, it is mainly 800MHz trunking network. In many countries and regions, there are some mandatory requirements for the coverage of such networks. Due to the wall of the building, the signal transmitted by the public safety wireless network base station is seriously attenuated after entering the room, and the signal strength cannot meet the requirements for the indoor depth area.
技术问题technical problem
为了解决这个问题，一般使用双向放大器（BDA）作为信源引入，将信号放大后转发进入室内无源分布系统（DAS），通过天线对室内各个区域进行覆盖。由于双向放大器的输出功率有限，所以支持的无源网络规模较小，如果增加双向放大器的功率，会带来产品成本的大幅增加，而且设备功耗也大幅增高，使得设备的后备电源系统造价也大幅提升。另一方面，对于这类重要的覆盖场景，目前也缺乏对天线是否正常连接的监测。这给分布系统在突发使用时的可靠性带来挑战。In order to solve this problem, a two-way amplifier (BDA) is generally used as a signal source, and the signal is amplified and forwarded into the indoor passive distribution system (DAS), and various indoor areas are covered by antennas. Due to the limited output power of the two-way amplifier, the supported passive network is small. If the power of the two-way amplifier is increased, the cost of the product will increase significantly, and the power consumption of the device will also increase significantly, making the cost of the backup power system of the device also Significantly improved. On the other hand, for such important coverage scenarios, there is currently a lack of monitoring on whether the antenna is normally connected. This brings challenges to the reliability of the distributed system when it is used unexpectedly.
技术解决方案Technical solutions
本发明的目的在于提供一种公共安全无线网络覆盖增强型分布系统，在信源功率不变的情况下，由于覆盖单元具备放大功能，可以提高信号的覆盖范围和支持更多的天线接入，同时还具备分布节点实时监测功能，提高覆盖系统的可监测性和可维护性。The purpose of the present invention is to provide a public safety wireless network coverage enhanced distribution system. Under the condition that the source power remains unchanged, since the coverage unit has an amplifying function, it can increase the signal coverage and support more antenna access. At the same time, it also has the function of real-time monitoring of distributed nodes, which improves the monitorability and maintainability of the coverage system.
为了达到上述目的，本发明采用的技术方案如下：一种公共安全无线网络覆盖增强型分布系统，包括主控单元和多个覆盖单元，所述主控单元的输入端口与信源输出端口相连接，所述主控单元的输出端口通过无源分布网络与多个覆盖单元的输入端口连接； 所述主控单元包括耦合器和第一有源RFID模块，所述耦合器的输入端口作为主控单元的输入端口，耦合器的输出端口作为主控单元的输出端口，耦合器的耦合端与第一有源RFID模块连接；所述覆盖单元包括双向放大模块、第二有源RFID模块和覆盖天线，所述双向放大模块的输入端口作为覆盖单元的输入端口，双向放大模块的输出端口与覆盖天线的输入端口连接，所述第二有源RFID模块与双向放大模块的输入端口连接。In order to achieve the above objective, the technical solution adopted by the present invention is as follows: a public safety wireless network coverage enhanced distribution system, including a main control unit and a plurality of coverage units, the input port of the main control unit is connected to the source output port , The output port of the main control unit is connected to the input ports of a plurality of covering units through a passive distribution network; the main control unit includes a coupler and a first active RFID module, and the input port of the coupler serves as the main control The input port of the unit, the output port of the coupler is used as the output port of the main control unit, and the coupling end of the coupler is connected to the first active RFID module; the covering unit includes a bidirectional amplifying module, a second active RFID module and a covering antenna The input port of the bidirectional amplifying module is used as the input port of the covering unit, the output port of the bidirectional amplifying module is connected to the input port of the covering antenna, and the second active RFID module is connected to the input port of the bidirectional amplifying module.
进一步地，所述双向放大模块包括输入端耦合器、下行放大器、输出端耦合器和上行放大器，所述输入端耦合器的输入端口作为双向放大模块的输入端口，输入端耦合器的输出端口与下行放大器的输入端口连接，下行放大器的输出端口与输出端耦合器的输入端口连接，输出端耦合器的输出端口作为双向放大模块的输出端口，输出端耦合器的耦合端与上行放大器的输入端相连，上行放大器的输出端与输入端耦合器的耦合端相连。Further, the bidirectional amplifying module includes an input end coupler, a downlink amplifier, an output end coupler, and an uplink amplifier. The input port of the input end coupler serves as the input port of the bidirectional amplifier module, and the output port of the input end coupler is The input port of the downstream amplifier is connected, the output port of the downstream amplifier is connected to the input port of the output coupler, the output port of the output coupler is used as the output port of the bidirectional amplifier module, and the coupling end of the output coupler is connected to the input end of the upstream amplifier Connected, the output end of the upstream amplifier is connected to the coupling end of the input end coupler.
进一步地，所述无源分布网络由同轴电缆组成。Further, the passive distribution network is composed of coaxial cables.
进一步地，所述主控单元的输出端口通过第一直流偏置器向无源分布网络末端的覆盖单元馈电，所述第二有源RFID模块和双向放大模块均通过第二直流偏置器从覆盖单元的输入端取电。Further, the output port of the main control unit feeds power to the cover unit at the end of the passive distribution network through a first DC biaser, and both the second active RFID module and the bidirectional amplifying module are biased by a second DC The inverter takes power from the input terminal of the cover unit.
进一步地，所述第二有源RFID模块内带有温度传感器。Further, the second active RFID module is provided with a temperature sensor.
有益效果Beneficial effect
与现有技术相比，本发明的优点在于：本发明提出一种针对公共安全网络室内分布覆盖的增强型分布系统，较目前的公共安全无线网络无源分布及覆盖系统相比，在信源功率不变的情况下，由于覆盖单元具备放大功能，可以提高信号的覆盖范围和支持更多的天线接入。与此同时，由于覆盖单元加入了第二有源RFID模块及温度传感器，主控单元可以通过查询覆盖单元的在位状态获知覆盖网络中各个覆盖端的状态，达到实时监测网络连接的效果。同时可以获取各个覆盖单元周边的环境温度，提前预警因为火灾等情况的发生。Compared with the prior art, the advantages of the present invention are: the present invention proposes an enhanced distribution system for indoor distributed coverage of public safety networks. Compared with the current passive distribution and coverage systems of public safety wireless networks, the In the case of constant power, since the coverage unit has an amplifying function, it can increase the signal coverage and support more antenna access. At the same time, since the coverage unit has added a second active RFID module and temperature sensor, the main control unit can learn the status of each coverage end in the coverage network by querying the presence status of the coverage unit, achieving the effect of real-time monitoring of network connections. At the same time, the ambient temperature around each coverage unit can be obtained, and the occurrence of fires and other situations can be warned in advance.
附图说明Description of the drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.
图1是现有技术的公共安全无线网络信号覆盖方案。Figure 1 is a prior art public safety wireless network signal coverage scheme.
图2是本发明所述公共安全无线网络覆盖增强型分布系统原理图。Fig. 2 is a schematic diagram of a distributed system with enhanced coverage of a public safety wireless network according to the present invention.
 图3是本发明中主控单元的原理图。Fig. 3 is a schematic diagram of the main control unit in the present invention.
图4是本发明中覆盖单元的原理图。Fig. 4 is a schematic diagram of the covering unit in the present invention.
图5是本发明中覆盖单元内双向放大模块的原理图。Figure 5 is a schematic diagram of the bidirectional amplifying module in the covering unit of the present invention.
图6是本发明一种实施例的框图。Fig. 6 is a block diagram of an embodiment of the present invention.
本发明的实施方式Embodiments of the present invention
下面结合附图对本发明的优选实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to make a clearer and clearer definition of the protection scope of the present invention.
参阅图2所示，本发明提供一种公共安全无线网络覆盖增强型分布系统，包括主控单元1和多个覆盖单元2，所述主控单元1的输入端口与信源4输出端口相连接，所述主控单元1的输出端口通过由同轴电缆组成的无源分布网络3与多个覆盖单元2的输入端口连接。Referring to Figure 2, the present invention provides a public safety wireless network coverage enhanced distribution system, including a main control unit 1 and a plurality of coverage units 2, the input port of the main control unit 1 is connected to the output port of the source 4 The output port of the main control unit 1 is connected to the input ports of multiple covering units 2 through a passive distribution network 3 composed of coaxial cables.
参阅图3所示，所述的主控单元1包括耦合器10和第一有源RFID模块11，耦合器10的输入端口作为主控单元1的输入端口，耦合器10的输出端口作为主控单元1的输出端口，耦合器10的耦合端与第一有源RFID模块11连接。Referring to FIG. 3, the main control unit 1 includes a coupler 10 and a first active RFID module 11. The input port of the coupler 10 is used as the input port of the main control unit 1, and the output port of the coupler 10 is used as the main control unit. The output port of the unit 1 and the coupling end of the coupler 10 are connected to the first active RFID module 11.
本实施例中，耦合器10和第一有源RFID模块11可以根据需要在现有技术中进行选择。In this embodiment, the coupler 10 and the first active RFID module 11 can be selected in the prior art as required.
参阅图4所示，所述的覆盖单元2包括双向放大模块20、第二有源RFID模块21和覆盖天线22，双向放大模块20的输入端口作为覆盖单元2的输入端口，双向放大模块20的输出端口与覆盖天线22的输入端口连接，第二有源RFID模块21与双向放大模块20的输入端口连接。4, the covering unit 2 includes a bidirectional amplifying module 20, a second active RFID module 21 and a covering antenna 22, the input port of the bidirectional amplifying module 20 is used as the input port of the covering unit 2, and the bidirectional amplifying module 20 The output port is connected to the input port of the cover antenna 22, and the second active RFID module 21 is connected to the input port of the bidirectional amplifying module 20.
本实施例中，双向放大模块20、第二有源RFID模块21和覆盖天线22可以根据需要在现有技术中进行选择。In this embodiment, the bidirectional amplifying module 20, the second active RFID module 21, and the covering antenna 22 can be selected in the prior art as required.
参阅图5所示，所述的双向放大模块20包括输入端耦合器200、下行放大器201、输出端耦合器202和上行放大器203，输入端耦合器200的输入端口作为双向放大模块20的输入端口，输入端耦合器200的输出端口与下行放大器201的输入端口连接，下行放大器201的输出端口与输出端耦合器202的输入端口连接，输出端耦合器202的输出端口作为双向放大模块20的输出端口，输出端耦合器202的耦合端与上行放大器203的输入端相连，上行放大器203的输出端与输入端耦合器200的耦合端相连。Referring to FIG. 5, the bidirectional amplifying module 20 includes an input end coupler 200, a downlink amplifier 201, an output end coupler 202, and an uplink amplifier 203. The input port of the input end coupler 200 is used as the input port of the bidirectional amplifier module 20. , The output port of the input coupler 200 is connected to the input port of the downstream amplifier 201, the output port of the downstream amplifier 201 is connected to the input port of the output coupler 202, and the output port of the output coupler 202 is used as the output of the bidirectional amplifier module 20 Port, the coupling end of the output coupler 202 is connected to the input end of the uplink amplifier 203, and the output end of the uplink amplifier 203 is connected to the coupling end of the input end coupler 200.
本实施例中，输入端耦合器200、下行放大器201、输出端耦合器202和上行放大器203可以根据需要在现有技术中进行选择。In this embodiment, the input coupler 200, the downstream amplifier 201, the output coupler 202, and the upstream amplifier 203 can be selected in the prior art as required.
本实施例中，所述的主控单元1的输出端口通过第一直流偏置器（BiasT）向无源分布网络3末端的覆盖单元2馈电，所述的第二有源RFID模块21和双向放大模块20均通过第二直流偏置器（BiasT）从覆盖单元2的输入端取电。In this embodiment, the output port of the main control unit 1 feeds power to the cover unit 2 at the end of the passive distribution network 3 through the first DC biaser (BiasT), and the second active RFID module 21 Both the bidirectional amplifying module 20 and the bidirectional amplifying module 20 obtain power from the input terminal of the covering unit 2 through the second DC biaser (BiasT).
所述第二有源RFID模块21内带有温度传感器，可以获取各个覆盖单元周边的环境温度，提前预警因为火灾等情况的发生。The second active RFID module 21 is equipped with a temperature sensor, which can obtain the ambient temperature around each covering unit, and warn in advance the occurrence of fire and other situations.
参阅图6所述，本实施例的一种具体应用，包括主控单元和四个覆盖单元，主控单元和四个覆盖单元通过无源分布系统的同轴电缆连接。Referring to FIG. 6, a specific application of this embodiment includes a main control unit and four covering units, and the main control unit and the four covering units are connected by a coaxial cable of a passive distribution system.
本实施例的具体应用中，信源4选用700/800MHz信源（双向放大器），耦合器10选用800MHz-1000MHz信号耦合器，第一有源RFID模块11选用915MHz有源RFID模块，双向放大模块选用20700/800MHz双向放大模块、第二有源RFID模块选用915MHz有源RFID模块，该915MHz有源 RFID模块带有温度传感器，可以探测覆盖单元附近的空气温度。In the specific application of this embodiment, the signal source 4 uses a 700/800MHz signal source (two-way amplifier), the coupler 10 uses a 800MHz-1000MHz signal coupler, and the first active RFID module 11 uses a 915MHz active RFID module and a two-way amplifier module. The 20700/800MHz two-way amplification module is selected, and the second active RFID module is the 915MHz active RFID module. The 915MHz active RFID module has a temperature sensor that can detect the air temperature near the covering unit.
本实施例的效果计算如下：700/800MHz信源（双向放大器）输出功率为30dBm，无源分布系统的损耗30dB。使用传统的信源加无源分布天线覆盖的方案，每个天线的公共安全网络覆盖信号的发射功率为30-30=0dBm，使用本发明的方案，覆盖端加入了有源双向放大功能，覆盖端增益一般设计为15dB，那么采用相同的700/800MHz信源双向放大器，信号达到覆盖端天线的发射功率就较传统方案提高了15dB，达到15dBm，提高了天线的覆盖范围和信号强度。The effect of this embodiment is calculated as follows: the output power of the 700/800MHz signal source (bidirectional amplifier) is 30 dBm, and the loss of the passive distributed system is 30 dB. Using the traditional signal source plus passive distributed antenna coverage scheme, the transmission power of the public safety network coverage signal of each antenna is 30-30=0dBm. Using the scheme of the present invention, the coverage end adds the active two-way amplification function to cover The end gain is generally designed to be 15dB, then using the same 700/800MHz source two-way amplifier, the transmit power of the signal reaching the coverage end antenna is increased by 15dB compared with the traditional scheme, reaching 15dBm, which improves the antenna coverage and signal strength.
与此同时，本发明的覆盖单元通过915MHz有源RFID模块与主控单元的915MHz有源RFID模块之间通信，上报覆盖单元的ID信息和温度传感信息，主控单元通过查询各个覆盖单元的信息汇总可以判断各个覆盖单元的在位情况。At the same time, the covering unit of the present invention communicates with the 915MHz active RFID module of the main control unit through the 915MHz active RFID module, and reports the ID information and temperature sensor information of the covering unit. The main control unit queries the information of each covering unit. Information summary can determine the presence of each covering unit.
虽然结合附图描述了本发明的实施方式，但是专利所有者可以在所附权利要求的范围之内做出各种变形或修改，只要不超过本发明的权利要求所描述的保护范围，都应当在本发明的保护范围之内。Although the embodiments of the present invention are described in conjunction with the accompanying drawings, the patent owner can make various deformations or modifications within the scope of the appended claims, as long as they do not exceed the protection scope described in the claims of the present invention. Within the protection scope of the present invention.

Claims (5)

  1. 一种公共安全无线网络覆盖增强型分布系统，其特征在于，包括主控单元和多个覆盖单元，所述主控单元的输入端口与信源输出端口相连接，所述主控单元的输出端口通过无源分布网络与多个覆盖单元的输入端口连接； 所述主控单元包括耦合器和第一有源RFID模块，所述耦合器的输入端口作为主控单元的输入端口，耦合器的输出端口作为主控单元的输出端口，耦合器的耦合端与第一有源RFID模块连接；所述覆盖单元包括双向放大模块、第二有源RFID模块和覆盖天线，所述双向放大模块的输入端口作为覆盖单元的输入端口，双向放大模块的输出端口与覆盖天线的输入端口连接，所述第二有源RFID模块与双向放大模块的输入端口连接。A public safety wireless network coverage enhanced distribution system, which is characterized by comprising a main control unit and a plurality of coverage units, the input port of the main control unit is connected to the source output port, and the output port of the main control unit Connect to the input ports of multiple coverage units through a passive distribution network; The main control unit includes a coupler and a first active RFID module, the input port of the coupler is used as the input port of the main control unit, the output port of the coupler is used as the output port of the main control unit, and the coupling end of the coupler is connected to the The first active RFID module is connected; the covering unit includes a bidirectional amplifying module, a second active RFID module and a covering antenna, the input port of the bidirectional amplifying module is used as the input port of the covering unit, and the output port of the bidirectional amplifying module is connected to the covering The input port of the antenna is connected, and the second active RFID module is connected to the input port of the bidirectional amplifying module.
  2. 根据权利要求1所述的公共安全无线网络覆盖增强型分布系统，其特征在于，所述双向放大模块包括输入端耦合器、下行放大器、输出端耦合器和上行放大器，所述输入端耦合器的输入端口作为双向放大模块的输入端口，输入端耦合器的输出端口与下行放大器的输入端口连接，下行放大器的输出端口与输出端耦合器的输入端口连接，输出端耦合器的输出端口作为双向放大模块的输出端口，输出端耦合器的耦合端与上行放大器的输入端相连，上行放大器的输出端与输入端耦合器的耦合端相连。The public safety wireless network coverage enhanced distribution system according to claim 1, wherein the two-way amplification module includes an input end coupler, a downlink amplifier, an output end coupler, and an uplink amplifier, and the input end coupler The input port is used as the input port of the two-way amplifier module, the output port of the input coupler is connected to the input port of the downstream amplifier, the output port of the downstream amplifier is connected to the input port of the output coupler, and the output port of the output coupler is used as a two-way amplifier The output port of the module, the coupling end of the output coupler is connected with the input end of the uplink amplifier, and the output end of the uplink amplifier is connected with the coupling end of the input end coupler.
  3. 根据权利要求1所述的公共安全无线网络覆盖增强型分布系统，其特征在于，所述无源分布网络由同轴电缆组成。The public safety wireless network coverage enhanced distribution system according to claim 1, wherein the passive distribution network is composed of coaxial cables.
  4. 根据权利要求1所述的公共安全无线网络覆盖增强型分布系统，其特征在于，所述主控单元的输出端口通过第一直流偏置器向无源分布网络末端的覆盖单元馈电，所述第二有源RFID模块和双向放大模块均通过第二直流偏置器从覆盖单元的输入端取电。The public safety wireless network coverage enhanced distribution system according to claim 1, wherein the output port of the main control unit feeds power to the coverage unit at the end of the passive distribution network through the first DC biaser, so Both the second active RFID module and the bidirectional amplifying module obtain electricity from the input end of the cover unit through a second DC biaser.
  5. 根据权利要求1所述的公共安全无线网络覆盖增强型分布系统，其特征在于，所述第二有源RFID模块内带有温度传感器。The public safety wireless network coverage enhanced distribution system according to claim 1, wherein the second active RFID module has a temperature sensor in it.
PCT/CN2020/107147 2020-04-22 2020-08-05 Public safety wireless network coverage enhanced distributed system WO2021212690A1 (en)

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Publication number Priority date Publication date Assignee Title
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203482400U (en) * 2013-06-18 2014-03-12 京信通信系统（广州）有限公司 Large power distribution cover system for mobile communication
US20140253245A1 (en) * 2013-03-06 2014-09-11 Auriga Measurement Systems, LLC Interference Tolerant, Broadband Radio Frequency Amplifier
CN206294350U (en) * 2016-12-09 2017-06-30 浙江东冠通信技术股份有限公司 Network depth cover type indoor distributed system
CN206332853U (en) * 2016-09-14 2017-07-14 天津京信通信系统有限公司 Mobile communication distributed coverage system
CN206413200U (en) * 2017-01-24 2017-08-15 河北烽联信息技术有限公司 A kind of room based on REID point monitoring system
CN206490836U (en) * 2016-12-28 2017-09-12 中国移动通信集团公司 Radio signal coverage system
CN109769253A (en) * 2017-11-09 2019-05-17 四川信诺天箭科技有限公司 A kind of indoor communications covering system
CN110475254A (en) * 2019-08-07 2019-11-19 福建京奥通信技术有限公司 5G wireless access formula indoor distributed system
CN110798843A (en) * 2019-12-05 2020-02-14 广州市瀚云信息技术有限公司 5G signal radio frequency distribution system
CN111479278A (en) * 2020-04-22 2020-07-31 广州市瀚云信息技术有限公司 Public safety wireless network coverage enhancement type distribution system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140253245A1 (en) * 2013-03-06 2014-09-11 Auriga Measurement Systems, LLC Interference Tolerant, Broadband Radio Frequency Amplifier
CN203482400U (en) * 2013-06-18 2014-03-12 京信通信系统（广州）有限公司 Large power distribution cover system for mobile communication
CN206332853U (en) * 2016-09-14 2017-07-14 天津京信通信系统有限公司 Mobile communication distributed coverage system
CN206294350U (en) * 2016-12-09 2017-06-30 浙江东冠通信技术股份有限公司 Network depth cover type indoor distributed system
CN206490836U (en) * 2016-12-28 2017-09-12 中国移动通信集团公司 Radio signal coverage system
CN206413200U (en) * 2017-01-24 2017-08-15 河北烽联信息技术有限公司 A kind of room based on REID point monitoring system
CN109769253A (en) * 2017-11-09 2019-05-17 四川信诺天箭科技有限公司 A kind of indoor communications covering system
CN110475254A (en) * 2019-08-07 2019-11-19 福建京奥通信技术有限公司 5G wireless access formula indoor distributed system
CN110798843A (en) * 2019-12-05 2020-02-14 广州市瀚云信息技术有限公司 5G signal radio frequency distribution system
CN111479278A (en) * 2020-04-22 2020-07-31 广州市瀚云信息技术有限公司 Public safety wireless network coverage enhancement type distribution system

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