WO2013029395A1 - Appareil de station de base et procédé de commutation de machine à canaux - Google Patents

Appareil de station de base et procédé de commutation de machine à canaux Download PDF

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Publication number
WO2013029395A1
WO2013029395A1 PCT/CN2012/075751 CN2012075751W WO2013029395A1 WO 2013029395 A1 WO2013029395 A1 WO 2013029395A1 CN 2012075751 W CN2012075751 W CN 2012075751W WO 2013029395 A1 WO2013029395 A1 WO 2013029395A1
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WO
WIPO (PCT)
Prior art keywords
channel machine
relay
base station
channel
signal
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Application number
PCT/CN2012/075751
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English (en)
Chinese (zh)
Inventor
朱昌富
陈涛
Original Assignee
海能达通信股份有限公司
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Application filed by 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Publication of WO2013029395A1 publication Critical patent/WO2013029395A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a base station apparatus and a channel machine switching method.
  • the base station includes a base station controller, a channel machine, a combiner, an antenna, and the like. After the modulated signals from the plurality of channel machines are combined by the combiner, they are transmitted from the antenna. In the scheme shown in FIG. 1, the modulated signals transmitted by the channel machine 1, the channel machine 2, the channel machine 3, and the channel machine 4 pass. The combiner is combined and sent out from the antenna.
  • a point frequency cavity combiner is generally used for combining, and the point frequency cavity combiner includes a plurality of filters, each filter corresponding to one frequency, that is, for one filter In this case, only one frequency of the signal can pass, which requires the operating frequency of each channel machine in the trunking communication system to correspond to the frequency supported by each filter, as shown in Figure 1, the operating frequency and filtering of the channeling machine 1.
  • the frequency supported by the device 1 is the same, the operating frequency of the channel 2 is the same as the frequency supported by the filter 2, and so on.
  • control channel there is only one control channel in a trunking communication system, but there may be multiple traffic channels, which may be the operating frequency of the channel machine 1, the working frequency of the channel machine 2, or other channel machines.
  • Working frequency the control channel is used to carry control signaling, for example, public information sent by the base station to all mobile stations, control information required for establishing a call between the base station and the mobile station, and the like.
  • the traffic channel is used to carry service data between the base station and the mobile station, such as voice data or media stream.
  • a channel machine When a channel machine fails, if the operating frequency of the channel machine is a control channel, the control channel needs to be switched to another channel machine. If a traffic channel is the operating frequency of the channel machine, the traffic channel needs to be Switching to another channel machine. For example, if channel machine 1 fails, the control channel or traffic channel needs to be switched to channel machine 2. At this time, the frequency of the control channel or the traffic channel is changed, and the operating frequency of the original channel machine 1 is changed. It is the operating frequency of the channel machine 2.
  • the prior art has the following disadvantages: When a certain channel machine fails, the frequency of the control channel or the traffic channel needs to be changed. If the frequency of the control channel is changed, the mobile station needs to disconnect from the original network, search the network again, and then re-register, resulting in switching on the control channel. During a period of time, the base station and the mobile station cannot communicate normally; if the frequency of the traffic channel is changed, the service data carried by the traffic channel is interrupted, and the communication between the base station and the mobile station is also interrupted.
  • the embodiment of the invention provides a base station device and a channel machine switching method, which can prevent communication between the base station and the mobile station when the channel device fails.
  • a base station device comprising: an RF control link, a first channel machine and a second channel machine, a first channel machine, configured to generate a modulated signal of a frequency and output to a radio frequency control link; and a second channel machine, Receiving a first control signal sent by the base station controller, where the first control signal is sent when the base station controller monitors that the first channel machine is faulty or the working time of the first channel machine reaches a predetermined working time, the first control signal
  • the operating frequency for controlling the second channel machine is f 1 ; the modulated signal of the frequency is generated according to the first control signal and output to the radio frequency control link; and the radio frequency control link is used to generate the first channel machine a modulated signal of a frequency output to a first inlet of the cavity combiner; a modulated signal of a frequency generated by the second channel machine is output to a first inlet of the cavity combiner; wherein the first inlet is connected
  • the frequency points supported by the filter in the cavity combiner are included.
  • a channel machine switching method includes:
  • the first channel machine generates a modulated signal of frequency and outputs to the radio frequency control link; the radio frequency control link outputs the modulated signal of the frequency generated by the first channel machine to the first entrance of the cavity combiner;
  • the frequency points supported by the filter in the cavity combiner connected to the inlet include
  • the second channel machine receives the first control signal sent by the base station controller, where the first control signal is sent when the base station controller monitors the first channel machine fault or the working time of the first channel machine reaches a predetermined working time,
  • the first control signal is used to control the operating frequency of the second channel machine to generate a modulation signal with a frequency according to the first control signal and output the signal to the radio frequency control link;
  • the radio frequency control link generates the second channel machine
  • the modulated signal of frequency is output to the first inlet of the cavity combiner.
  • the second channel machine after receiving the first control signal for controlling the operating frequency of the second channel machine to be the operating frequency of the first channel machine, the second channel machine generates a modulated signal of the frequency and outputs the modulated signal to the radio frequency control link.
  • the RF control link outputs the modulated signal of the frequency generated by the second channel machine to the first inlet of the cavity combiner, so that if the first channel machine fails, the second channel machine generates a modulated signal with a frequency of And output to the first entrance of the cavity combiner, at this time the frequency of the control channel or the traffic channel does not need to be changed, so that the communication between the base station and the mobile station is not interrupted.
  • FIG. 1 is a structural diagram of a base station device provided by the prior art
  • FIG. 2 is a structural diagram of a base station device according to an embodiment of the present invention.
  • FIG. 3 is a structural diagram of another base station device according to an embodiment of the present invention.
  • FIG. 4-A is a schematic diagram of the internal connection of the base station device when the first channel device does not fail according to the embodiment of the present invention
  • FIG. 4B is another schematic diagram of the internal connection of the base station device when the first channel device does not fail according to the embodiment of the present invention.
  • FIG. 5-A is a schematic diagram of internal connection of a base station device after a failure of a first channel device according to an embodiment of the present invention
  • FIG. 5-B is another schematic diagram of internal connection of a base station device after a failure of a first channel device according to an embodiment of the present invention
  • Figure 6-A is a structural diagram of a base station device for dual-channel machine backup according to an embodiment of the present invention
  • Figure 6-B is a structural diagram of a base station device for another dual-channel machine backup according to an embodiment of the present invention
  • FIG. 7 is a structural diagram of a base station device for backing up a multi-channel machine according to an embodiment of the present invention
  • FIG. 8 is a structural diagram of a base station device for backing up a multi-channel machine according to an embodiment of the present invention
  • FIG. 9 is a structural diagram of a PDT system according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of a channel machine switching method according to an embodiment of the present invention
  • FIG. 11 is a flowchart of another channel machine switching method according to an embodiment of the present invention.
  • an embodiment of the present invention provides a base station device, including: a first channel machine 01, a second channel machine 02, and a radio frequency control link 05, where
  • a first channel machine 01 configured to generate a modulated signal of frequency and output to the radio frequency control link 05
  • a second channel machine 02 configured to receive a first control signal sent by the base station controller, where the first control signal is used Controlling the operating frequency of the second channel machine to generate a modulation signal of the frequency according to the first control signal and outputting the signal to the radio frequency control link 05.
  • the first control signal may be monitored by the base station controller to the first channel.
  • the first control signal is sent when the base station controller monitors that the working time of the first channel machine reaches a predetermined working time, and does not affect the implementation of the present invention.
  • the base station controller monitors that the first channel device fault may be that the base station controller monitors that the first channel device is not working properly, or the base station controller monitors that the communication between the first channel device and the base station controller is interrupted, that is, the first channel is considered Machine failure.
  • the base station controller monitors the scenario in which the first control signal is applied to the first channel machine and the second channel machine when the working time of the first channel machine reaches the predetermined working time, for example, the first channel machine works continuously for 12 hours. Stop working and work by the second channel machine.
  • the base station controller may be integrated in the base station device or may be independent of the base station device, and does not affect the implementation of the present invention.
  • the original working frequency of the second channel machine may be f 2 , and after receiving the first control signal sent by the base station controller, the second channel machine switches the operating frequency from f 2 to f l to enable the control channel.
  • the frequency of the traffic channel does not change, that is, remains as or, the second channel machine does not generate a modulated signal before receiving the first control signal, and generates a modulated signal of frequency after receiving the first control signal.
  • the RF control link 05 is configured to output the modulated signal of the frequency generated by the first channel machine 01 to the first inlet of the cavity combiner 07; and output the modulated signal of the frequency generated by the second channel machine 02 to the cavity a first inlet of the body combiner 07; wherein the cavity combiner 07 comprises at least: a first filter 071 connected to the first inlet of the cavity combiner 07, and a cavity combiner 07 A second filter 072 connected to the second inlet, the frequency point supported by the first filter 071 includes f l excluding f 2 , and the frequency point supported by the second filter 072 includes f 2 , not included.
  • the radio frequency control link may be in the following embodiments.
  • the radio frequency switching link, or the radio frequency control link is a link including a splitter or a combiner. For details, refer to the detailed description of the subsequent embodiments.
  • the second channel machine after receiving the first control signal for controlling the operating frequency of the second channel machine to be the operating frequency of the first channel machine, the second channel machine generates a modulated signal of the frequency and outputs the modulated signal to the radio frequency control link.
  • the RF control link outputs the modulated signal of the frequency generated by the second channel machine to the first inlet of the cavity combiner, so that if the first channel machine fails, the second channel machine generates a modulated signal with a frequency of And output to the first entrance of the cavity combiner, at this time the frequency of the control channel or the traffic channel does not need to be changed, so that the communication between the base station and the mobile station is not interrupted.
  • an embodiment of the present invention provides a base station device, including: a first channel device 10, a second channel device 20, and a radio frequency switching link 50, where the operating frequency of the first channel device 10 is f l The operating frequency of the two-channel machine 20 is f 2 ;
  • a first channel machine 10 configured to generate a modulation signal of a frequency and output to a radio frequency switching link
  • a second channel machine 20 configured to receive a first control signal sent by the base station controller, where the first control signal is used to control The operating frequency of the second channel machine is switched to generate a modulation signal of frequency f 2 and output to the radio frequency switching link before receiving the first control signal sent by the base station controller; receiving the first control sent by the base station controller After the signal, according to the first control signal, the operating frequency is switched from f 2 to fi to generate a modulated signal of frequency and output to the radio frequency switching link;
  • the radio frequency switching link 50 is configured to receive a modulation signal from the first channel machine and a modulation signal from the second channel machine, and receive a second control signal sent by the base station controller, where the second control signal is used to control the radio frequency switching chain.
  • the signal sent by the way to the first inlet of the cavity combiner is switched from the modulated signal from the first channel machine to the modulated signal from the second channel machine, to the cavity combiner before receiving the second control signal
  • the first entry shown by reference numeral 70 in the figure transmits a modulated signal from the first channel machine (i.e., the modulated signal generated by the first channel machine); after receiving the second control signal, stops the cavity
  • the first inlet of the router transmits a modulated signal from the first channel machine, and transmits the modulated signal from the second channel machine to the first inlet of the cavity combiner, and the modulated signal from the second channel machine is the second
  • the channel generator generates a modulated signal of frequency f 2 , wherein the filter in the cavity combiner 70 to
  • the operating frequency f 2 of the second channel machine 20 may correspond to a traffic channel, that is, the operating frequency f 2 of the second channel machine 20 is used.
  • Carrying service data such as voice data or media stream, after the base station controller 60 monitors that the first channel machine fault sends the first control signal to the second channel machine 20, the second channel machine changes the operating frequency to become the control channel.
  • the second channel machine undertakes transmission of some service data, and shares the traffic data transmission pressure of other channel machines, and can be used as a control channel in time when the first channel machine fails.
  • the mobile station does not need to disconnect and re-search the network from the original network, thereby avoiding the communication interruption between the base station and the mobile station caused by the control channel switching.
  • the base station device further includes: a base station controller 60, in an embodiment, the base station controller monitors the first channel machine, and sends the first control signal and the second control when the first channel machine fault is monitored signal. In another embodiment, the base station controller is configured to monitor the working duration of the first channel machine, and issue the first control signal and the second control signal when the working time of the first channel machine reaches a predetermined working time.
  • the second channel machine after receiving the first control signal for controlling the operating frequency of the second channel machine to be switched to the operating frequency of the first channel machine, the second channel machine switches the operating frequency from f 2 to fi to generate a frequency. a modulated signal and output to the radio frequency switching link; the radio frequency switching link transmits the modulated signal from the second channel machine to the first entrance of the cavity combiner after receiving the second control signal, such that if the first If the channel machine fails, the second channel machine switches its working frequency to the working frequency of the first channel machine, and the radio frequency switching link sends the modulation signal generated after the second channel machine switches the working frequency to the cavity combiner.
  • the frequency of the control channel does not change for the mobile station, so the mobile station does not need to re-search the network, thus avoiding the base station and the mobile station caused by the control channel switching.
  • the communication between the two is interrupted.
  • FIG. 4A and FIG. 5 are a structural diagram of a base station device according to an embodiment of the present invention, including: a first channel device 100, a second channel device 200, a radio frequency switching link 500, and a base station controller 600. And the cavity combiner 700, in this embodiment, the frequency corresponding to the control channel is assumed to be, the radio frequency switching chain
  • the way 500 includes: a control unit 501, a first RF relay 502, and a second RF relay 503.
  • the difference between FIG. 4-A and FIG. 5-A is that the first RF relay 502 and the second RF relay 503 are connected in different manners.
  • Figure 4-A shows the connection manner of the first RF relay 502 and the second RF relay 503 when the first channel machine 100 fails
  • Figure 5-A shows the first channel machine 100 after the failure, the first The connection mode of the RF relay 502 and the second RF relay 503.
  • the control unit 501 can be a single chip microcomputer.
  • the first channel machine 100 When the first channel machine 100 does not fail, the first channel machine 100 generates a modulated signal of frequency and outputs it to the radio frequency switching link; the second channel machine 200 generates a modulated signal of frequency f 2 and outputs it to the radio frequency switching link. .
  • the RF switching link 500 includes: a control unit 501, a first RF relay 502, and a second RF relay 503, the first RF relay 502 comprising: a first output port 5022 electrically connected to the first inlet of the cavity combiner a second output port 5023 electrically connected to the second inlet of the cavity combiner and an input port 5021 electrically connected to the output port of the first channel machine; the second RF relay 503 comprises: a cavity combiner with the cavity The second inlet is electrically connected to the third output port 5032, the fourth output port 5033 electrically connected to the first inlet of the cavity combiner, and the input port 5031 electrically connected to the output port of the second channel machine.
  • the input port 5021 of the first RF relay 502 is connected to the first output port 5022 of the first RF relay 502. At this time, the input port 5021 of the first RF relay 502 receives the first
  • the modulated signal of the channel unit 100 i.e., the modulated signal at the frequency generated by the first channel unit 100
  • the input port 5031 of the second RF relay is connected to the third output port 5032 of the second RF relay.
  • the modulation signal of the second channel machine 200 received by the input port 5031 of the second RF relay (ie, the second channel machine 100 generates
  • the modulated signal having a frequency of f 2 is output from the third output port 5032 to the second inlet of the cavity combiner 700.
  • the filter in the cavity combiner 700 to which the first inlet of the cavity combiner 700 is connected is a first filter 71, and the cavity combiner connected to the second inlet of the cavity combiner 700
  • the filter in 700 is the second filter 72.
  • the filter bandwidth of the first filter 71 includes a frequency, excluding the frequency f 2
  • the filter bandwidth of the second filter 72 includes the frequency f 2 , excluding the frequency.
  • the base station controller 600 monitors the first channel device 100, and when the first channel device 100 is detected to be faulty, sends a first control signal to the second channel device 200.
  • the first control signal can be sent through the RS485 or CAN bus.
  • the first control signal is used to control the operating frequency of the second channel machine to be switched to Specifically, the first control signal includes: a label of a target frequency to be switched by the second channel, that is, a label of the frequency, so that the second channel machine obtains the frequency f l according to the label and sends a second to the radio frequency switching link 500.
  • the second control signal is a digital signal
  • the second control signal is used to control the signal sent by the radio frequency switching link to the first inlet of the cavity combiner from the modulated signal from the first channel machine Switching to a modulated signal from the second channel machine and controlling the signal transmitted by the RF switching link to the second inlet of the cavity combiner to switch from the modulated signal from the second channel machine to the modulated signal from the first channel machine, That is, the control RF switching link connects the input port 5031 of the second RF relay to the third output port 5032, and the input port 5031 of the second RF relay is connected with the fourth output port 5033, and the RF switching link is controlled to be the first RF relay.
  • the input port 5021 is connected to the first output port 5022 and the input port 5021 of the first RF relay is connected to the second output port 5023.
  • the second control signal can be After the value "1”, a subsequent radio link control unit 501 to switch 500 receives the "1", the second RF relay controls corresponding switching.
  • the second channel machine 200 After receiving the first control signal, the second channel machine 200 obtains a frequency that switches the operating frequency from f 2 to the generated frequency according to the label of the target frequency to be switched of the second channel (ie, the frequency label). The signal is output to the RF switching link 500.
  • the control unit 501 in the radio frequency switching link 500 parses the second control signal, and controls the input port 5021 of the first radio frequency relay to be connected to the first output port 5022 according to the analysis result.
  • the input port 5021 of the first RF relay is connected to the second output port 5023.
  • the output port of the first RF relay 502 outputting the modulation signal of the first channel device 100 is switched from the first output port 5022 to the
  • the second output port 5023 is controlled; the input port 5031 of the second RF relay is connected to the third output port 5032, and the input port 5031 of the second RF relay is connected to the fourth output port 5033.
  • the second RF relay 503 is connected.
  • An output port for outputting a modulated signal of the second channel machine 200 is switched from the third output port 5032 to the fourth output port 5033 to cause a modulated signal from the second channel machine 200 (i.e., generated by the second channel unit 200).
  • the modulation signal of frequency is transmitted to the first inlet of the cavity combiner 700.
  • the second channel machine when the first channel machine is faulty, switches its working frequency to the working frequency of the first channel machine, and the radio frequency switching link sends the modulation signal generated after the second channel machine switches the working frequency to the The first inlet of the cavity combiner.
  • the frequency of its control channel does not change, and since the base station controller monitors the failure of the first channel machine, it sends to the second channel machine.
  • the first control signal and the second control signal are sent to the radio frequency switching link at the ms level, and the radio link hardware switching time is less than 20.0 ms, which avoids communication between the base station and the mobile station caused by the control channel switching. Interrupted.
  • the base station device provided in this embodiment may perform channel channel switching after the first channel device 100 is faulty, and restore the original working state of the first channel device and the second channel device.
  • the base station controller 600 After monitoring the fault repair of the first channel machine 100, the third control signal is sent to the second channel machine 200.
  • the first control signal can be sent through the RS485 or the CAN bus.
  • the third control signal is used to control the operating frequency of the second channel machine to be switched to f 2 .
  • the third control signal includes: a label of a target frequency to be switched by the second channel, that is, a label of the frequency f 2 .
  • the two-channel machine obtains the frequency f 2 according to the label, and sends a fourth control signal to the radio frequency switching link 500, where the fourth control signal is used to control the signal sent by the radio frequency switching link to the first entrance of the cavity combiner.
  • the modulated signal from the second channel machine is switched to the modulated signal from the first channel machine, and the signal transmitted by the RF switching link to the second inlet of the cavity combiner is switched from the modulated signal from the first channel machine to
  • the modulation signal of the second channel machine that is, the control RF switching link, connects the input port 5031 of the second RF relay to the fourth output port 5033, and the input port 5031 of the second RF relay is connected with the third output port 5032 to control the radio frequency.
  • the switching link connects the input port 5021 of the first RF relay to the second output port 5023 and is connected to the input port 5021 of the first RF relay to be connected with the first output port 5022;
  • Second control signal may be a value "0", after a subsequent radio link control unit 501 to switch 500 receives the "0", the second RF relay controls corresponding switching.
  • the second channel machine 200 After receiving the third control signal, the second channel machine 200 switches its own operating frequency from fi to f 2 to generate a modulated signal of frequency f 2 and outputs it to the radio frequency switching link 500.
  • the control unit 501 in the RF switching link 500 controls the input port 5021 of the first RF relay to be connected to the second output port 5023 to be changed to the input port 5021 of the first RF relay.
  • the first output port 5022 is connected.
  • the output port of the first RF relay 502 outputting the modulation signal of the first channel device 100 is switched from the second output port 5023 to the first output port 5021.
  • the input port 5031 of the relay is connected to the fourth output port 5033, and the input port 5031 of the second RF relay is connected to the third output port 5032.
  • the output of the modulation signal of the second channel machine 200 is outputted on the second RF relay 503.
  • the port is switched from the fourth output port 5033 to the third output port 5032, so that the first channel machine and the second letter can be restored. The original working state of the machine.
  • the radio frequency switching link 500 may not include the control unit 501.
  • the base station controller directly controls the first radio frequency relay 502 and the second radio frequency relay 503 by using a TTL level, such as a base station.
  • the controller sends a second control signal to the first RF relay 502 and the second RF relay 503, the second control signal is at a high level, and the first RF relay 502 is at a high level.
  • the input port 5021 is connected to the first output port 5022 and the input port 5021 is connected to the second output port 5023.
  • the output port of the modulation signal of the first channel device 100 is outputted from the first RF relay 502.
  • the first output port 5022 is switched to the second output port 5023; the second RF relay 503 is connected to the third output port 5022 and the fourth output port 5023 under the control of the high level. Connecting, at this time, the output port of the second RF relay 503 outputting the modulation signal of the second channel machine 200 is switched from the third output port 5032 to the fourth output port 5 033.
  • the second control signal includes a first TTL level and a second TTL level, that is, the base station controller sends a first TTL level to the first RF relay 502, such as a high level, and the first RF relay 502 is at the first TTL level.
  • the input port 5021 is connected to the first output port 5022 and the input port 5021 is connected to the second output port 5023.
  • the base station controller 600 sends a second TTL level to the second RF relay 503, such as a low level.
  • the second RF relay 503 connects the input port 5031 and the third output port 5022 to the input port 5031 and the fourth output port 5023 under the control of the second TTL level;
  • the fourth control signal is sent to the first RF relay 502 and the second RF relay 503.
  • the fourth control signal is at a low level.
  • the first RF relay 502 connects the input port 5021 and the second output port 5023 to the input port 5021 and is connected to the first output port 5022 under the control of the low level.
  • the first RF switch 502 outputs the first channel machine.
  • the output port of the modulation signal of 100 is switched from the second output port 5023 to the first output port 5022; the second RF relay 503 is connected to the fourth output port 5033 under the control of the low level.
  • the input port 5031 is connected to the third output port 5032.
  • the fourth control signal includes a third TTL level and a fourth TTL level, that is, the base station controller sends a third TTL level to the first radio frequency relay 502, and the first radio frequency relay 502 is under the control of the third TTL level.
  • Input port 5021 and second input The outlet 5023 is connected to the input port 5021 to be connected to the first output port 5022; the base station controller sends a fourth TTL level to the second RF relay 503, and the second RF relay 503 inputs the input port 5031 under the control of the fourth TTL level.
  • the input port 5031 is connected to the fourth output port 5033 and is connected to the third output port 5032. It should be noted that, after the first channel device 100 is faulty, the input port 5021 and the second output port 5023 on the first RF relay can be manually connected to be connected to the input port 5021 and connected to the first output port 5022.
  • the input port 5031 of the second RF relay is connected to the fourth output port 5033 to be connected to the input port 5031 and the third output port 5032.
  • radio frequency switching link may also not use the radio frequency relay, and does not affect the implementation of the present invention.
  • the second channel machine may idle and not transmit the modulated signal, which does not affect the implementation of the present invention.
  • the embodiment shown in FIG. 4-A and FIG. 5-A takes the operating frequency of the first channel machine as the frequency corresponding to the control channel as an example, and describes that when the first channel machine fails, the second channel machine switches itself.
  • the operating frequency is the operating frequency of the first channel machine.
  • the operating frequency of the first channel machine may also be a frequency corresponding to a certain traffic channel.
  • the second channel machine switches its own operating frequency to the failed first channel machine. The operating frequency continues to use this frequency to transmit service signals.
  • FIG. 4-A FIG. 5-A and FIG. 6-A.
  • FIG. 4-B FIG. 5-B and FIG. 6-B.
  • the RF switching link may include: a first RF relay 502, a second RF relay 503, a third RF relay 504, and a fourth RF relay 505. ;
  • the first output port and the second output port of the first RF relay 502 are electrically connected to the third RF relay 504 and the fourth RF relay 505 respectively, and the input port of the first RF relay 502 and the output of the first channel machine Electric connection
  • the third output port and the fourth output port of the second RF relay 503 are electrically connected to the third RF relay 504 and the fourth RF relay 505, respectively, and the input port of the second RF relay 503 and the output of the second channel device Electric connection
  • the third RF relay 504 is electrically connected to the first inlet of the cavity combiner;
  • the fourth RF relay 505 is electrically coupled to a second inlet of the cavity combiner.
  • the power of the prior-stage switches ie, the first RF relay 502 and the second RF relay 503 can be detected, and the power amplifier switch of the channel machine is controlled according to the power detection result (ie, the third RF relay 504 and The fourth RF relay 505) prevents thermal switching of the switch, ensures the life of the switch and avoids damage to the channel machine caused by total reflection.
  • FIG. 7-A shows a schematic diagram of three channel machines backing up each other.
  • the first channel machine, the second channel machine and the third channel machine are backed up with each other.
  • the working frequency of the first channel machine is f l, which is a cavity.
  • the frequency point supported by the filter (ie, the first filter) connected to the first inlet of the combiner, the operating frequency of the second channel machine is f 2 , which is the filter connected to the second inlet of the cavity combiner
  • the frequency point supported by the second filter, the operating frequency of the third channel machine is f 3 , which is the frequency supported by the filter (ie the third filter) connected to the third inlet of the cavity combiner. point.
  • Fig. 7-A is also provided in this embodiment. Please refer to Fig. 7-B for details.
  • the power of the switch at the previous stage can be detected, and the power switch of the channel machine is controlled according to the power detection result to prevent the switch from switching, ensuring the life of the switch and avoiding Total reflection damage to the channel machine.
  • FIG. 8 shows still another base station device according to an embodiment of the present invention, which includes: a first channel machine
  • the base station device may further include a cavity combiner 907 and a base station
  • the splitter and the combiner can use a power splitter and a branch line coupler.
  • the input port of the first splitter 903 is electrically connected to the output port of the first channel machine 901, and the two output ports of the first splitter 903 are respectively connected to the first combiner 905 and the second combiner 906.
  • One input port is electrically connected, and two output ports of the second splitter 904 are respectively connected to the first combiner 905 and the second combiner
  • the other input port of the 906 is electrically connected; the output port of the first combiner 905 is electrically connected to the first inlet of the cavity combiner 907; the output port of the second combiner 906 is connected to the cavity of the cavity combiner 907
  • the two inlets are electrically connected.
  • the first splitter 903 divides the modulated signal output by the first channel machine 901 into two paths, and respectively transmits the signals to the first combiner 905 and the second combiner 906, and the second splitter 904
  • the modulated signal output by the two-channel machine 902 is divided into two paths and transmitted to the first combiner 905 and the second combiner 906, respectively, so that the first combiner 905 outputs the modulated signal and the first channel machine 901.
  • the modulated signal outputted by the two-channel machine 902 is combined and outputted to the first inlet of the cavity combiner 907.
  • the frequency supported by the filter connected to the first inlet of the cavity combiner 907 includes not including f 2 , Even if the filter receives a modulated signal of the sum of the frequencies, the filter can only output the signal of the frequency to the antenna, and filter the signal of the frequency f 2 .
  • the second combiner 906 combines the modulated signal output by the first channel machine 901 and the modulated signal output by the second channel machine 902 into a second input of the cavity combiner 907, due to cavity combining
  • the frequency supported by the filter 2 connected to the second inlet of the device 907 includes f 2 , which is not included.
  • the filter 2 can only output the signal of the frequency f 2 . Go to the antenna and filter out the signal with the frequency. Since the operating frequency of the second channel machine is switched when the first channel machine 901 fails, it is ensured that the first combiner 901 can continuously transmit the modulated signal of the frequency to the first inlet of the cavity combiner 907.
  • the operating frequency of the control channel is as described above, the frequency of the control channel does not change for the mobile station, so the mobile station does not need to re-search the network, thus avoiding communication between the base station and the mobile station caused by the control channel switching. Interrupted.
  • FIG 9 illustrates a police digital cluster using the technical solution of the present invention (Police Digital
  • Trunking, PDT system comprising: a backplane 800, two base station controllers (base station controller 1 and base station controller 2), numbers 801 and 802, respectively, two switching power supplies (switching power supply 1 and switching power supply 2) , the labels are 803 and 804, fan unit 805, 4 channel machines (ie, channel machine 1, channel machine 2, channel machine 3, and channel machine 4), numbered 806, 807, 808, 809, respectively, and combiner 810, a splitter 811, wherein the radio frequency control link is integrated in the combiner 810, wherein the structure and function of the radio frequency control link are the same as FIG. 3, FIG. 4-A, FIG. 5-A, FIG. 6-A, The structure and function shown in FIG. 7-A or FIG. 8 are similar, and details are not described herein again.
  • an embodiment of the present invention provides a channel device switching method, which is applicable to the base station device provided by the foregoing embodiments.
  • the method mainly includes: 1001, the first channel machine generates a modulated signal of a frequency and outputs the signal to the radio frequency control link; the radio frequency control link outputs the modulated signal of the frequency generated by the first channel machine to the first entrance of the cavity combiner;
  • the frequency points supported by the filter in the cavity combiner to which the first inlet is connected include.
  • the radio frequency control link in the embodiment of the present invention may be the radio frequency switching link in the foregoing embodiment, or may be a link including a splitter and a combiner, without affecting the implementation of the present invention.
  • the second channel machine receives a first control signal sent by the base station controller, where the first control signal is used to control an operating frequency of the second channel machine to be f1 ; and the second channel machine generates according to the first control signal.
  • the modulated signal of the frequency is output to the radio frequency control link; the radio frequency control link outputs the modulated signal of the frequency generated by the second channel machine to the first inlet of the cavity combiner.
  • the radio frequency control link receives a second control signal from the base station controller, and the second control signal is used to control a signal sent by the radio frequency control link to the first entrance of the cavity combiner.
  • the modulated signal from the first channel machine is switched to the modulated signal from the second channel machine.
  • the first control signal and the second control signal are sent when the base station controller monitors the first channel machine fault; or the first control signal and the second control signal are monitored by the base station controller to the first channel.
  • the second channel machine after receiving the first control signal for controlling the operating frequency of the second channel machine to be the operating frequency of the first channel machine, the second channel machine generates a modulated signal of the frequency and outputs the modulated signal to the radio frequency control link.
  • the RF control link outputs the modulated signal of the frequency generated by the second channel machine to the first inlet of the cavity combiner, so that if the first channel machine fails, the second channel machine generates a modulated signal with a frequency of And output to the first entrance of the cavity combiner, at this time the frequency of the control channel or the traffic channel does not need to be changed, so that the communication between the base station and the mobile station is not interrupted.
  • the first channel machine generates a modulated signal with a frequency and outputs the signal to the radio frequency switching link.
  • the radio frequency switching link sends the modulated signal from the first channel machine to the first port of the cavity combiner.
  • the frequency points supported by the filter in the cavity combiner to which the first inlet is connected include fi, excluding f 2 .
  • the base station controller monitors the first channel machine fault, and sends a first control signal to the second channel machine.
  • the first control signal is used to control the working frequency of the second channel machine to switch to the radio frequency switching chain.
  • the foregoing first control signal and the second control signal are sent when the base station controller monitors that the working time of the first channel machine reaches a predetermined working time, and the solution is applicable to the first channel machine and the second channel machine rotation.
  • the work for example, the first channel machine works after the 12-hour continuous operation by the second channel machine, and after the second channel machine works continuously for 12 hours, it is switched to the first channel machine.
  • the second channel machine receives the first control signal sent by the base station controller, and according to the first control signal, switches the operating frequency from f 2 to the modulated signal with the generated frequency and outputs the modulated signal to the radio frequency switching link.
  • the method further includes: the second channel machine generates a modulation signal with a frequency of f 2 and outputs the signal to the radio frequency switching link; and the radio frequency switching link will be from the second channel machine before receiving the second control signal a modulated signal (ie, a modulated signal of frequency f 2 generated by the second channel machine) is sent to a second inlet of the cavity combiner, the filter in the cavity combiner to which the second inlet is connected is supported by The frequency points include f 2 , not included.
  • the radio frequency switching link receives the second control signal sent by the base station controller, stops transmitting the modulated signal from the first channel machine to the first port of the cavity combiner, and uses the modulated signal from the second channel machine (ie, The modulation signal generated by the two-channel machine with a frequency of f 2 is transmitted to the first inlet of the cavity combiner.
  • Step 1103 and step 1104 have no sequential sequence and can be executed simultaneously.
  • the radio frequency switching link in the embodiment may adopt the radio frequency switching link in the foregoing FIG. 3, FIG. 4-A, FIG. 5-A, FIG. 6-A, and FIG. 7-A.
  • the method further includes:
  • the base station controller After monitoring, by the base station controller, the first channel machine fault repair, sending a third control signal to the second channel machine, where the third control signal is used to control the working frequency of the second channel machine to be switched to f 2 ;
  • the circuit sends a fourth control signal for controlling the signal transmitted by the radio frequency switching link to the first inlet of the cavity combiner to switch from the modulated signal from the second channel machine to the modulation from the first channel machine signal.
  • the second channel device switches the operating frequency from f to 2 according to the third control signal to generate a modulated signal with a frequency of f 2 and outputs the modulated signal to the radio frequency switching link.
  • the radio frequency switching link receives the fourth control signal sent by the base station controller, stops transmitting the modulated signal from the second channel machine to the first port of the cavity combiner, and uses the modulated signal from the first channel machine (ie, A modulation signal generated by a channel machine is transmitted to the first inlet of the cavity combiner.
  • Step 1106 and step 1107 have no sequential sequence and can be executed simultaneously.
  • the foregoing third control signal and the fourth control signal are sent when the base station controller monitors that the working time of the second channel machine reaches a predetermined working time.
  • the radio frequency switching link may include:
  • first RF outlet a first RF outlet, a second RF relay, a third RF relay, and a fourth RF relay
  • first output port and the second output port of the first RF relay are electrically connected to the third RF relay and the fourth RF relay, respectively
  • the input port of the first RF relay is electrically connected to an output port of the first channel machine
  • the third output port and the fourth output port of the second RF relay are electrically connected to the third RF relay and the fourth RF relay, respectively, and the input port of the second RF relay is electrically connected to the output port of the second channel machine;
  • the third RF relay is electrically connected to the first inlet of the cavity combiner
  • the fourth RF relay is electrically coupled to the second inlet of the cavity combiner.
  • the method may further comprise:
  • the first RF relay and the second RF relay are tested for power; the third RF relay and the fourth RF relay are controlled according to the result of the power detection to prevent switching hot switching, ensuring the life of the switch and Avoid damage caused by total reflection to the channel machine.
  • the second channel machine after receiving the first control signal for controlling the operating frequency of the second channel machine to switch to the operating frequency of the first channel machine, the second channel machine switches the operating frequency from f 2 to fi to generate a frequency. a modulated signal and output to the radio frequency switching link; the radio frequency switching link transmits the modulated signal from the second channel machine to the first entrance of the cavity combiner after receiving the second control signal, such that if the first If the channel machine fails, the second channel machine switches its working frequency to the working frequency of the first channel machine, and the radio frequency switching link sends the modulation signal generated after the second channel machine switches the working frequency to the cavity combiner.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un appareil de station de base et un procédé de commutation de machine à canaux. L'appareil de station de base comprend : une première machine à canaux, servant à générer un signal de modulation avec une fréquence f1 et à délivrer en sortie le signal de modulation à une liaison de commande radiofréquence; une deuxième machine à canaux, servant à recevoir un premier signal de commande envoyé par un contrôleur de station de base, le premier signal de commande étant utilisé pour commander la fréquence de travail sur la deuxième machine à canaux à f1, et, selon le premier signal de commande, à générer un signal de modulation avec une fréquence f1 et à délivrer en sortie le signal de modulation à la liaison de commande radiofréquence; et la liaison de commande de radiofréquence servant à délivrer en sortie le signal de modulation avec la fréquence f1, qui est générée par la première machine à canaux pour une première entrée d'un multiplexeur à cavités, et à délivrer en sortie le signal de modulation avec la fréquence f1, qui est générée par la deuxième machine à canaux à la première entrée du multiplexeur à cavités, à des points de fréquence supportés par des filtres dans le multiplexeur à cavités connecté à la première entrée contenant f1. La présente invention concerne un procédé de commutation de machine à canaux.
PCT/CN2012/075751 2011-08-30 2012-05-18 Appareil de station de base et procédé de commutation de machine à canaux WO2013029395A1 (fr)

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CN102271370B (zh) * 2011-08-30 2014-02-12 海能达通信股份有限公司 基站设备及信道机切换方法
CN102970704B (zh) * 2012-12-14 2015-12-23 大唐移动通信设备有限公司 无线链路故障的监控方法、系统及基站
CN104270833B (zh) * 2014-09-10 2018-01-09 哈尔滨海能达科技有限公司 一种无线通信系统及其分路器
CN105259911A (zh) * 2015-07-22 2016-01-20 北京佰才邦技术有限公司 可移动载体的控制方法、系统及无人机的控制系统
CN105553994B (zh) * 2015-12-22 2018-12-11 通号通信信息集团上海有限公司 一种基于语音网关的数字无线通信系统及其应用
CN106937346A (zh) * 2015-12-30 2017-07-07 哈尔滨海能达科技有限公司 Pdt控制信道机轮换方法、基站及基站控制器
DE102018102056A1 (de) * 2018-01-30 2019-08-01 Kathrein Se HF-Combiner für eine Mobilfunk-Site, HF-Combineranordnung mit zwei HF-Combinern für eine Mobilfunk-Site und eine solche Mobilfunksite
CN111092672B (zh) * 2018-10-24 2022-04-29 成都鼎桥通信技术有限公司 一种信道选择方法和装置
CN111654921B (zh) * 2020-04-13 2022-05-17 广州维德科技有限公司 一种集群基站通信方法及集群基站通信系统

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