CN103973346A - Distributed antenna control system - Google Patents
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Abstract
Description
技术领域technical field
本发明属于通信技术领域，尤其涉及一种分布式天线控制系统。The invention belongs to the technical field of communication, and in particular relates to a distributed antenna control system.
背景技术Background technique
对于隧道、地铁、地下停车场、矿井以及高速公路、铁路等结构受限且不规则，或者在一定情况下需要根据特定的物理环境对覆盖范围进行改变，若在这种情况下进行无线通信时，就需要有效解决无线电波灵活覆盖的问题。使用通常的单体天线，当需要根据使用环境对电波覆盖范围进行灵活配置时，需要很多个天线，且每个天线都需要与信号收发单元如收发机通过射频电缆连接，而且由于射频信号的衰减特性，天线距离收发机较远的地方信号很难达到理想的覆盖，另外，当使用环境比较恶劣，射频电缆在使用、扯动或者收放的过程中，也较容易出现松动或者断裂的故障，因此，当收发机连接多个天线时，维护起来也比较困难。For tunnels, subways, underground parking lots, mines, highways, railways and other structures that are restricted and irregular, or under certain circumstances it is necessary to change the coverage according to a specific physical environment, if wireless communication is performed in this case , it is necessary to effectively solve the problem of flexible coverage of radio waves. Using a common single antenna, when it is necessary to flexibly configure the radio wave coverage according to the use environment, many antennas are required, and each antenna needs to be connected to a signal transceiver unit such as a transceiver through a radio frequency cable, and due to the attenuation of the radio frequency signal Characteristics, where the antenna is far away from the transceiver, the signal is difficult to achieve ideal coverage. In addition, when the operating environment is relatively harsh, the RF cable is more prone to loose or broken faults during use, pulling or retracting. Therefore, when the transceiver is connected to multiple antennas, it is also more difficult to maintain.
发明内容Contents of the invention
根据现有技术存在的问题，本发明公开了一种分布式天线控制系统，包括：信号收发单元和多个依次排列进行信号通信的分布式天线控制单元，所述多个分布式天线控制单元中排在首位的分布式天线控制单元与信号收发单元信号通信；According to the problems existing in the prior art, the present invention discloses a distributed antenna control system, including: a signal transceiver unit and a plurality of distributed antenna control units arranged in sequence for signal communication, among the plurality of distributed antenna control units The first distributed antenna control unit communicates with the signal transceiver unit;
所述信号收发单元将信号发送至分布式天线控制单元，所述分布式天线控制单元接收所述信号收发单元传送的信号、选择信号传输路径、进行功率放大和功率分配并将功率传送至下一分布式天线控制单元，所述下一个分布式天线控制单元按照上述方式对信号进行处理后传送至下一个分布式天线控制单元。The signal transceiving unit sends the signal to the distributed antenna control unit, and the distributed antenna control unit receives the signal transmitted by the signal transceiving unit, selects a signal transmission path, performs power amplification and power distribution, and transmits the power to the next The distributed antenna control unit, the next distributed antenna control unit processes the signal in the above manner and then sends it to the next distributed antenna control unit.
所述分布式天线控制单元包括接收射频信号的TR端口和REIN端口、以及输出射频信号的REOUT端口和ANT端口，所述排在首位的分布式天线控制单元的TR端口通过射频电缆与信号收发单元相连接，上一个分布式天线控制单元的REOUT端口与下一个分布式天线控制单元的REIN端口相连接进行信号通信，每个分布式天线控制单元的ANT端口都与天线相连接。The distributed antenna control unit includes a TR port and a REIN port for receiving radio frequency signals, and a REOUT port and an ANT port for outputting radio frequency signals, and the TR port of the first distributed antenna control unit communicates with the signal transceiver unit through a radio frequency cable The REOUT port of the previous distributed antenna control unit is connected to the REIN port of the next distributed antenna control unit for signal communication, and the ANT port of each distributed antenna control unit is connected to the antenna.
所述分布式天线控制单元包括：射频开关、双向功率放大器、功率分配器、控制单元、供电单元、变频器I和变频器II。The distributed antenna control unit includes: a radio frequency switch, a bidirectional power amplifier, a power divider, a control unit, a power supply unit, a frequency converter I and a frequency converter II.
所述双向功率放大器接收所述信号收发单元传送的功率信号对功率进行放大后将功率传送至功率分配器进行功率分配、并将功率沿分布式天线控制单元的REOUT端口和ANT端口输出；所述变频器I的一端与分布式天线控制单元的REIN端口相连接另一端与射频开关的输入端相连接，所述射频开关的另一个输入端与TR端口相连接，所述射频开关的输出端分别与双向功率放大器和用于选择功率信号传输路径、控制功率分配器进行功率分配的控制单元相连接，所述供电单元与双向功率放大器相连接，所述功率分配器与REOUT端口之间设置有变频器II。The bidirectional power amplifier receives the power signal transmitted by the signal transceiving unit, amplifies the power, transmits the power to the power divider for power distribution, and outputs the power along the REOUT port and the ANT port of the distributed antenna control unit; the One end of the frequency converter 1 is connected to the REIN port of the distributed antenna control unit and the other end is connected to the input end of the radio frequency switch, the other input end of the radio frequency switch is connected to the TR port, and the output ends of the radio frequency switch are respectively It is connected with a bidirectional power amplifier and a control unit for selecting a power signal transmission path and controlling a power divider for power distribution, the power supply unit is connected with a bidirectional power amplifier, and a frequency conversion is set between the power divider and the REOUT port Device II.
所述多个依次排列的分布式天线控制单元中排在首位的分布式天线控制单元的REIN端口和排在最后一个的分布式天线控制单元的REOUT端口都与负载相连接，其他的多个分布式天线控制单元的REIN端口和REOUT端口与天线或射频电缆相连接。Among the distributed antenna control units arranged in sequence, the REIN port of the first distributed antenna control unit and the REOUT port of the last distributed antenna control unit are connected to the load, and the other multiple distributed antenna control units are connected to the load. Connect the REIN port and REOUT port of the type antenna control unit to the antenna or RF cable.
所述分布式天线控制单元之间通过射频电缆相连接；无线传输下：所述分布式天线控制单元之间通过天线进行无线通信。The distributed antenna control units are connected through radio frequency cables; under wireless transmission: the distributed antenna control units communicate wirelessly through antennas.
所述分布式天线控制单元的ANT端口与天线相连接时，该天线采用定向天线和全向天线。When the ANT port of the distributed antenna control unit is connected to the antenna, the antenna adopts a directional antenna or an omnidirectional antenna.
由于采用了上述技术方案，本发明公开的一种分布式天线控制系统，该天线控制系统可以连接任意一种单体天线，连接天线的数量可以任意多个，天线的辐射功率可以进行设置，且各天线之间可以利用射频电缆，通过有线或者无线的方式进行连接。该分布式天线控制系统可以有效解决各种特殊物理环境中无线信号的灵活覆盖问题。Due to the adoption of the above technical solution, the present invention discloses a distributed antenna control system, the antenna control system can be connected to any single antenna, the number of connected antennas can be arbitrary, and the radiation power of the antenna can be set, and The antennas can be connected in a wired or wireless manner by using radio frequency cables. The distributed antenna control system can effectively solve the problem of flexible coverage of wireless signals in various special physical environments.
附图说明Description of drawings
为了更清楚地说明本申请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申请中记载的一些实施例，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 more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in this application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1为本发明在有线传输下分布式天线控制系统的结构示意图；Fig. 1 is the structural representation of the distributed antenna control system under the wired transmission of the present invention;
图2为本发明在无线传输下分布式天线控制系统的结构示意图；Fig. 2 is a schematic structural diagram of a distributed antenna control system under wireless transmission according to the present invention;
图3为本发明中分布式天线控制单元的结构示意图。Fig. 3 is a schematic structural diagram of a distributed antenna control unit in the present invention.
图中：1、射频开关；2、双向功率放大器；3、功率分配器；4、控制单元；5、供电单元；6、变频器I；7、变频器II；10、分布式天线控制单元；11、信号收发单元。In the figure: 1. RF switch; 2. Bidirectional power amplifier; 3. Power divider; 4. Control unit; 5. Power supply unit; 6. Inverter I; 7. Inverter II; 10. Distributed antenna control unit; 11. Signal transceiver unit.
具体实施方式Detailed ways
为使本发明的技术方案和优点更加清楚，下面结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚完整的描述：In order to make the technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention:
如图1所示的分布式天线控制系统包括信号收发单元11和多个分布式天线控制单元10，多个分布式天线控制单元10依次排列进行信号通信。多个分布式天线控制单元10中排在首位的分布式天线控制单元10与信号收发单元11通过射频电缆信号通信。The distributed antenna control system shown in FIG. 1 includes a signal transceiving unit 11 and a plurality of distributed antenna control units 10, and the plurality of distributed antenna control units 10 are arranged in sequence for signal communication. The first distributed antenna control unit 10 among the plurality of distributed antenna control units 10 communicates with the signal transceiving unit 11 through a radio frequency cable.
工作状态下：信号收发单元11将功率信号发送至分布式天线控制单元10，分布式天线控制单元10接收所述信号收发单元11传送的功率信号、选择信号传输路径、进行功率放大和功率分配并将功率传送至下一分布式天线控制单元10，所述下一分布式天线控制单元10按照上述方式对功率信号进行处理后传送至下一个分布式天线控制单元10。在分布式天线控制单元10上可以匹配上相应的单体天线、射频电缆和负载。实际应用中射频电缆和匹配负载的特性阻抗可以为50欧姆。In the working state: the signal transceiver unit 11 sends the power signal to the distributed antenna control unit 10, and the distributed antenna control unit 10 receives the power signal transmitted by the signal transceiver unit 11, selects the signal transmission path, performs power amplification and power distribution and The power is transmitted to the next distributed antenna control unit 10 , and the next distributed antenna control unit 10 processes the power signal in the above manner and then transmits it to the next distributed antenna control unit 10 . Corresponding single antennas, radio frequency cables and loads can be matched on the distributed antenna control unit 10 . In practical applications, the characteristic impedance of the radio frequency cable and the matching load may be 50 ohms.
如图1、图2和图3所示，分布式天线控制单元10包括4个端口，TR端口、REIN端口、REOUT端口和ANT端口，TR端口和REIN端口为射频信号的输入端口，REOUT端口和ANT端口为射频信号的输出端口，排在首位的分布式天线控制单元10的TR端口通过射频电缆与信号收发单元11相连接，上一个分布式天线控制单元10的REOUT端口与下一个分布式天线控制单元10的REIN端口相连接进行信号通信，每一个分布式天线控制单元10的ANT端口都与天线相连接。As shown in Fig. 1, Fig. 2 and Fig. 3, distributed antenna control unit 10 comprises 4 ports, TR port, REIN port, REOUT port and ANT port, TR port and REIN port are the input port of radio frequency signal, REOUT port and The ANT port is the output port of the radio frequency signal, and the TR port of the first distributed antenna control unit 10 is connected with the signal transceiver unit 11 by a radio frequency cable, and the REOUT port of the previous distributed antenna control unit 10 is connected with the next distributed antenna The REIN port of the control unit 10 is connected for signal communication, and the ANT port of each distributed antenna control unit 10 is connected with the antenna.
进一步的，如图3所示，分布式天线控制单元10包括射频开关1、双向功率放大器2、功率分配器3、控制单元4、供电单元5、变频器I6和变频器II7。双向功率放大器2的输入端与射频开关1相连接、输出端与功率分配器3相连接，所述双向功率放大器2接收所述信号收发单元11传送的功率信号对功率进行放大后将功率传送至功率分配器3进行功率分配、并将功率沿分布式天线控制单元10的REOUT端口和ANT端口输出。所述变频器I6的一端与REIN端口相连接另一端与射频开关1的输入端相连接，所述射频开关1的另一个输入端与该分布式天线控制单元10的TR端口相连接，所述射频开关1的输出端分别与双向功率放大器2和用于选择功率信号传输路径、控制功率分配器3进行功率分配的控制单元4相连接，所述供电单元5与双向功率放大器2相连接，所述功率分配器3与REOUT端口之间设置有变频器II7。Further, as shown in FIG. 3 , the distributed antenna control unit 10 includes a radio frequency switch 1 , a bidirectional power amplifier 2 , a power divider 3 , a control unit 4 , a power supply unit 5 , a frequency converter I6 and a frequency converter II7 . The input terminal of the bidirectional power amplifier 2 is connected to the radio frequency switch 1, and the output terminal is connected to the power divider 3. The bidirectional power amplifier 2 receives the power signal transmitted by the signal transceiver unit 11, amplifies the power, and transmits the power to The power divider 3 performs power distribution and outputs the power along the REOUT port and the ANT port of the distributed antenna control unit 10 . One end of the frequency converter I6 is connected to the REIN port and the other end is connected to the input end of the radio frequency switch 1, and the other input end of the radio frequency switch 1 is connected to the TR port of the distributed antenna control unit 10, the The output ends of the radio frequency switch 1 are respectively connected with the bidirectional power amplifier 2 and the control unit 4 for selecting the power signal transmission path and controlling the power distributor 3 for power distribution, and the power supply unit 5 is connected with the bidirectional power amplifier 2, so A frequency converter II7 is arranged between the power distributor 3 and the REOUT port.
进一步的，多个依次排列的分布式天线控制单元10中排在首位的分布式天线控制单元10的REIN端口和排在最后一个的分布式天线控制单元10的REOUT端口都与负载相连接，其他的排在中间的多个分布式天线控制单元10的REIN端口和REOUT端口与天线或者射频电缆相连接。Further, the REIN port of the first distributed antenna control unit 10 and the REOUT port of the last distributed antenna control unit 10 among the distributed antenna control units 10 arranged in sequence are all connected to the load, and the other The REIN ports and REOUT ports of the multiple distributed antenna control units 10 arranged in the middle are connected to antennas or radio frequency cables.
进一步的，有线传输下：分布式天线控制单元10之间通过射频电缆相连接；无线传输下：分布式天线控制单元10之间通过无线天线进行无线通信。即所有的分布式天线控制单元10不用连接射频电缆，可以独立放置。Further, under wired transmission: the distributed antenna control units 10 are connected through radio frequency cables; under wireless transmission: the distributed antenna control units 10 perform wireless communication through wireless antennas. That is, all the distributed antenna control units 10 can be placed independently without being connected with radio frequency cables.
进一步的，所述分布式天线控制单元10的ANT端口与天线相连接时，该天线采用定向天线和全向天线，实现工作区域的信号覆盖。Further, when the ANT port of the distributed antenna control unit 10 is connected to an antenna, the antenna adopts a directional antenna and an omnidirectional antenna to realize signal coverage in the working area.
分布式天线控制系统在两种即有线传输模式和无线传输模式下的工作原理为：The working principle of the distributed antenna control system in two kinds of wired transmission mode and wireless transmission mode is as follows:
在有线模式下，如图1所示：与信号源最近的分布式天线控制单元10的TR端口通过射频电缆连接信号收发机(实际应用中信号收发单元11可以为信号收发机，)信号发送过程为：信号经过端口TR进入分布式天线控制单元10，控制射频开关1实现通路选择，从而引导信号经双向功率放大器2传输至功率分配器3，经功率分配分别传输至REOUT端口和ANT端口，ANT端口连接天线，将信号辐射出去，REOUT端口通过变频器II7经射频电缆与下一个分布式天线控制单元10的REIN端口连接；信号接收过程为：ANT端口接收信号，经功率分配器3进入双向功率放大器2，控制射频开关1，引导信号进入TR端口或者REIN端口，TR端口接收信号之后，经射频电缆将信号传输至信号收发机，REIN端口接收信号之后，通过变频器I6，将信号通过射频电缆传输至其他分布式天线控制单元10的REOUT端口。In the wired mode, as shown in Figure 1: the TR port of the distributed antenna control unit 10 closest to the signal source is connected to the signal transceiver (in practical applications, the signal transceiver unit 11 can be a signal transceiver,) the signal transmission process It is: the signal enters the distributed antenna control unit 10 through the port TR, controls the radio frequency switch 1 to realize channel selection, thereby guiding the signal to be transmitted to the power divider 3 through the bidirectional power amplifier 2, and then transmitted to the REOUT port and the ANT port respectively through power distribution, ANT The port is connected to the antenna to radiate the signal, and the REOUT port is connected to the REIN port of the next distributed antenna control unit 10 through the frequency converter II7 through the RF cable; the signal receiving process is: the ANT port receives the signal and enters the bidirectional power through the power divider 3 Amplifier 2 controls the RF switch 1 to guide the signal into the TR port or REIN port. After the TR port receives the signal, it transmits the signal to the signal transceiver through the RF cable. After the REIN port receives the signal, it transmits the signal through the RF cable through the frequency converter I6. transmitted to the REOUT ports of other distributed antenna control units 10.
在无线模式下，如图2所示：与信号源最近的分布式天线控制单元10的TR端口通过射频电缆连接信号收发机、REIN端口连接匹配负载，排在最后一个分布式天线控制单元10的REOUT端口也连接匹配负载，其余的分布式天线控制单元10的REIN端口和REOUT端口均连接天线，信号发送过程为：信号收发机发送信号，通过射频电缆传输至TR端口，控制射频开关1，引导信号通过双向功率放大器2，然后经过功率分配器3，分别传输至REOUT端口和ANT端口，REOUT端口通过变频器II7，经天线将中继信号发射出去，并传输至其他分布式天线控制单元10的REIN端口，ANT端口连接天线，将信号辐射至覆盖区域；信号接收过程为：ANT端口接收信号，经功率分配器3和双向功率放大器2，控制射频开关1，引导信号进入TR端口或者REIN端口，TR端口接收信号之后，经射频电缆将信号传输至信号收发机，REIN端口接收信号之后，通过变频器I6，将信号通过天线传输至下一个分布式天线控制单元10的REOUT端口。In the wireless mode, as shown in Figure 2: the TR port of the distributed antenna control unit 10 closest to the signal source is connected to the signal transceiver through the radio frequency cable, and the REIN port is connected to the matching load, and the last distributed antenna control unit 10 is arranged The REOUT port is also connected to the matching load, and the REIN port and the REOUT port of the remaining distributed antenna control unit 10 are connected to the antenna. The signal transmission process is: the signal transceiver sends the signal, transmits it to the TR port through the radio frequency cable, controls the radio frequency switch 1, and guides The signal passes through the bidirectional power amplifier 2, and then passes through the power divider 3, and is transmitted to the REOUT port and the ANT port respectively. The REOUT port transmits the relay signal through the inverter II7 through the antenna, and transmits it to other distributed antenna control units 10. The REIN port and the ANT port are connected to the antenna to radiate the signal to the coverage area; the signal receiving process is: the ANT port receives the signal, passes through the power divider 3 and the bidirectional power amplifier 2, controls the RF switch 1, and guides the signal into the TR port or the REIN port, After the TR port receives the signal, it transmits the signal to the signal transceiver through the radio frequency cable. After the REIN port receives the signal, the signal is transmitted to the REOUT port of the next distributed antenna control unit 10 through the antenna through the frequency converter I6.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.
Claims (5)
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| CN201410223167.4A CN103973346B (en) | 2014-05-23 | 2014-05-23 | A Distributed Antenna Control System |
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| CN110278011A (en) * | 2019-06-12 | 2019-09-24 | 京信通信系统（中国）有限公司 | Distributing antenna system, method and apparatus |
| WO2021223121A1 (en) * | 2020-05-06 | 2021-11-11 | 深圳市大疆创新科技有限公司 | Bidirectional multi-frequency amplifier, transceiver, control method and storage medium |
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