Cooperative frequency switching control device, base station node, terminal node and communication system

Abstract

The invention relates to the technical field of wireless communication, and particularly discloses a cooperative frequency switching control device, a base station node, a terminal node and a communication system.The cooperative frequency switching control device comprises an auxiliary frequency switching unit, a communication unit, a spectrum sensing unit, an intelligent control unit and a clock unit, and the intelligent control unit is used for controlling the spectrum sensing unit to sense air interface frequency; the auxiliary frequency switching unit is controlled to carry out bidirectional conversion between the working frequency and the air interface frequency; the communication unit is used for maintaining a network-level time synchronization relationship of the guard network and transmitting a frequency switching instruction in the guard network; the auxiliary frequency switching unit is used for assisting the external equipment to perform bidirectional conversion between the working frequency and the air interface frequency under the control of the intelligent control unit; the clock unit is used for providing a time service signal for synchronous timing for external equipment; the spectrum sensing unit is used for sensing the air interface candidate frequency state of the guard network. The cooperative frequency switching control device provided by the invention can improve the anti-interference capability.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and in particular, to a cooperative frequency switching control device, a service base station node, a service terminal node, and a communication system. Background Art

[0002] Commercial cellular network technologies represented by 5G, with their excellent characteristics such as large bandwidth, low latency, and ultra-large-scale networking, have significantly changed people's lifestyles and promoted the rapid progress of society. Commercial cellular networks all operate on specific working frequencies, and these frequencies are not allowed to be used by other wireless devices to prevent interference with communication; when applying cellular networks to special fields, due to the lack of anti-interference ability of cellular networks, when encountering interference, communication degradation or even service interruption may occur.

[0003] Therefore, how to enable frequency switching between the base station and the terminal of a commercial cellular network to avoid interference has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0004] The present invention provides a cooperative frequency switching control device, a service base station node, a service terminal node, and a communication system, which solve the problem that the base station and the terminal of a commercial cellular network in the related art do not support cooperative frequency switching.

[0005] As a first aspect of the present invention, a cooperative frequency switching control device is provided, which includes: an auxiliary frequency switching unit, a communication unit, a spectrum sensing unit, an intelligent control unit, and a clock unit. The auxiliary frequency switching unit, the communication unit, the spectrum sensing unit, and the clock unit are all communicatively connected to the intelligent control unit, and both the clock unit and the auxiliary frequency switching unit are communicatively connected to the communication unit; The intelligent control unit is configured to control the spectrum sensing unit to sense the air interface frequency, control the communication unit to share its own air interface candidate frequency status with the guard network, and control the auxiliary frequency switching unit to perform bidirectional transformation between the working frequency and the air interface frequency. The guard network is a communication network formed between multiple cooperative frequency switching control devices; The communication unit establishes a communication connection with the guard network through the guard air interface, and is configured to maintain the network-level time synchronization relationship of the guard network and to transmit the frequency switching instruction in the guard network; The auxiliary frequency switching unit is connected to an external device through a service radio frequency interface, and is configured to assist the external device to perform bidirectional transformation between the working frequency and the air interface frequency under the control of the intelligent control unit. The external device includes a service base station or a service terminal; The clock unit is connected to the external device through a timing interface, and is configured to provide a timing signal for synchronization timing to the external device; The spectrum sensing unit is used to sense the air interface candidate frequency status of the guard network under the control of the intelligent control unit, and share the sensing result through the guard interface.

[0006] Further, the auxiliary frequency switching unit at least includes: a selection switch unit, a transmitting frequency conversion unit, and a receiving frequency conversion unit. The transmitting frequency conversion unit and the receiving frequency conversion unit are both connected to the selection switch unit, and the selection switch unit, the transmitting frequency conversion unit, and the receiving frequency conversion unit are all connected to the intelligent control unit; The selection switch unit is connected to the service air interface, and can select the transmitting channel of the transmitting frequency conversion unit and the receiving channel of the receiving frequency conversion unit under the control of the intelligent control unit. The transmitting channel of the transmitting frequency conversion unit at least includes a transmitting direct-through channel and a transmitting frequency conversion channel, and the receiving channel of the receiving frequency conversion unit at least includes a receiving direct-through channel and a receiving frequency conversion channel; The transmitting frequency conversion unit is used to directly transmit the operating frequency input by the service radio frequency interface to the service air interface when the intelligent control unit selects the transmitting direct-through channel, and is used to perform frequency conversion on the operating frequency input by the service radio frequency interface and then output it to the service air interface when the intelligent control unit selects the transmitting frequency conversion channel; The receiving frequency conversion unit is used to directly transmit the air interface frequency input by the service air interface to the service radio frequency interface when the intelligent control unit selects the receiving direct-through channel, and is used to perform frequency conversion on the air interface frequency input by the service air interface and then output it to the service radio frequency interface when the intelligent control unit selects the receiving frequency conversion channel.

[0007] Further, the selection switch unit includes a first data selection switch and a second data selection switch, The transmitting frequency conversion unit includes a first mixer, a first hopping filter, a first amplifier, and a first local oscillator. The first input end of the first mixer is connected to the first end of the first data selection switch, the second input end of the first mixer is connected to the first local oscillator, the output end of the first mixer is connected to the input end of the first hopping filter, the output end of the first hopping filter is connected to the input end of the first amplifier, and the output end of the first amplifier is connected to the first end of the second data selection switch; The first mixer can mix the operating frequency input from the service RF interface through the first end of the first data selection switch with the first local oscillator frequency of the first local oscillator to obtain the air interface frequency to be transmitted. The first hopping filter can perform filtering processing on the air interface frequency to be transmitted after mixing. The first amplifier can amplify the air interface frequency to be transmitted after the filtering processing and output it to the service air interface through the first end of the second data selection switch. The service air interface can transmit the amplified air interface frequency to be transmitted; When the first ends of the first data selection switch and the second data selection switch are simultaneously selected and enabled by the intelligent control unit, a transmission frequency conversion channel of the transmission frequency conversion unit is formed. The second ends of the first data selection switch and the second data selection switch are directly connected. When the second ends of the first data selection switch and the second data selection switch are simultaneously selected and enabled by the intelligent control unit, a transmission direct-through channel of the transmission frequency conversion unit is formed; The receiving frequency conversion unit includes a second hopping filter, a second amplifier, a second mixer, and an intermediate frequency filter. The input end of the second hopping filter is connected to the third end of the second data selection switch. The output end of the second hopping filter is connected to the input end of the second amplifier. The output end of the second amplifier is connected to the first input end of the second mixer. The second input end of the second mixer is connected to the first local oscillator. The output end of the second mixer is connected to the input end of the intermediate frequency filter. The output end of the intermediate frequency filter is connected to the third end of the first data selection switch; The second hopping filter can perform filtering processing on the received air interface frequency input from the service air interface through the third end of the second data selection switch. The second amplifier can amplify the received air interface frequency after the filtering processing. The second mixer can mix the amplified received air interface frequency with the second local oscillator frequency of the first local oscillator to obtain the operating frequency to be received. The operating frequency to be received is output to the service RF interface through the third end of the first data selection switch. The service RF interface can transmit the operating frequency to be received; When the third ends of the first data selection switch and the second data selection switch are simultaneously selected and enabled by the intelligent control unit, a receiving frequency conversion channel of the receiving frequency conversion unit is formed. The fourth ends of the first data selection switch and the second data selection switch are directly connected. When the fourth ends of the first data selection switch and the second data selection switch are simultaneously selected and enabled by the intelligent control unit, a receiving direct-through channel of the receiving frequency conversion unit is formed.

[0008] Furthermore, the auxiliary frequency switching unit further includes a first duplexer and a second duplexer. The first duplexer is disposed at one end close to the service radio frequency interface and is connected to the service radio frequency interface. The second duplexer is disposed at one end close to the service air interface and is connected to the service air interface. The first duplexer can output the operating frequency input from the service radio frequency interface to the transmit frequency conversion unit, and can output the air interface frequency output from the receive frequency conversion unit to the service radio frequency interface. The second duplexer can output the air interface frequency output from the transmit frequency conversion unit to the service air interface, and can output the air interface frequency input from the service air interface to the receive frequency conversion unit. The selection switch unit includes a first data selection switch, a second data selection switch, a third data selection switch, and a fourth data selection switch. The first data selection switch and the second data selection switch are both connected to the first duplexer. The third data selection switch and the fourth data selection switch are both connected to the second duplexer. The transmit frequency conversion unit includes a first mixer, a first hopping filter, a first amplifier, and a first local oscillator. A first input end of the first mixer is connected to a first end of the first data selection switch. A second input end of the first mixer is connected to the first local oscillator. An output end of the first mixer is connected to an input end of the first hopping filter. An output end of the first hopping filter is connected to an input end of the first amplifier. An output end of the first amplifier is connected to a first end of the third data selection switch. The first mixer can mix the operating frequency input from the service radio frequency interface after being input through the first duplexer and the first end of the first data selection switch with the local oscillator frequency of the first local oscillator to obtain the air interface frequency to be transmitted. The first hopping filter can perform filtering processing on the air interface frequency to be transmitted after mixing. The first amplifier can amplify the air interface frequency to be transmitted after the filtering processing and output it to the service air interface through the first end of the third data selection switch and the second duplexer. The service air interface can transmit the amplified air interface frequency to be transmitted. When the first end of the first data selection switch and the first end of the third data selection switch are simultaneously selected and gated by the intelligent control unit, a transmit frequency conversion channel of the transmit frequency conversion unit passing through the first duplexer and the second duplexer is formed. The second end of the first data selection switch is directly connected to the second end of the third data selection switch. When the second end of the first data selection switch and the second end of the third data selection switch are simultaneously selected and gated by the intelligent control unit, a transmit direct-through channel of the transmit frequency conversion unit passing through the first duplexer and the second duplexer is formed. The receiving frequency conversion unit includes a second hopping filter, a second amplifier, a second mixer, an intermediate frequency filter, and a second local oscillator. The input end of the second hopping filter is connected to the first end of the fourth data selection switch. The output end of the second hopping filter is connected to the input end of the second amplifier. The output end of the second amplifier is connected to the first input end of the second mixer. The second input end of the second mixer is connected to the second local oscillator. The output end of the second mixer is connected to the input end of the intermediate frequency filter. The output end of the intermediate frequency filter is connected to the first end of the second data selection switch; The second hopping filter can perform filtering processing on the received air interface frequency input from the service air interface after it is input through the second duplexer and the first end of the fourth data selection switch. The second amplifier can perform amplification processing on the filtered received air interface frequency. The second mixer can mix the amplified received air interface frequency with the local oscillator frequency of the second local oscillator to obtain the received operating frequency to be received. The intermediate frequency filter can perform intermediate frequency filtering on the received operating frequency to be received. The received operating frequency after intermediate frequency filtering is output to the service radio frequency interface through the first end of the second data selection switch and the first duplexer. The service radio frequency interface can transmit the received operating frequency; When the first end of the third data selection switch and the first end of the fourth data selection switch are simultaneously selected by the intelligent control unit, a receiving frequency conversion channel of the receiving frequency conversion unit passing through the first duplexer and the second duplexer is formed. The second end of the third data selection switch is directly connected to the second end of the fourth data selection switch. When the second end of the third data selection switch and the second end of the fourth data selection switch are simultaneously selected by the intelligent control unit, a receiving direct-through channel of the receiving frequency conversion unit passing through the first duplexer and the second duplexer is formed.

[0009] Further, the auxiliary frequency switching unit further includes a first duplexer and a second duplexer. The first duplexer is arranged at one end close to the service radio frequency interface and is connected to the service radio frequency interface. The second duplexer is arranged at one end close to the service air interface and is connected to the service air interface. The first duplexer can output the operating frequency input from the service radio frequency interface to the transmitting frequency conversion unit, and can output the air interface frequency output from the receiving frequency conversion unit to the service radio frequency interface; The second duplexer can output the air interface frequency output from the transmitting frequency conversion unit to the service air interface, and can output the air interface frequency input from the service air interface to the receiving frequency conversion unit; The selection switch unit includes a first data selection switch, a second data selection switch, a third data selection switch, a fourth data selection switch, a fifth data selection switch, a sixth data selection switch, and a seventh data selection switch. The first data selection switch and the second data selection switch are both connected to the first duplexer. The third data selection switch and the fourth data selection switch are both connected to the second duplexer. The input and output ends of the fifth data selection switch are connected to the service radio frequency interface. The first gating end of the fifth data selection switch is connected to the first duplexer. The second gating end of the fifth data selection switch is connected to the first data selection switch. The third gating end of the fifth data selection switch is connected to the second data selection switch. The input and output ends of the sixth data selection switch are connected to the service air interface. The first gating end of the sixth data selection switch is connected to the second duplexer. The second gating end of the sixth data selection switch is connected to the third data selection switch. The third gating end of the sixth data selection switch is connected to the fourth data selection switch; The transmission frequency conversion unit includes a first mixer, a first frequency hopping filter, a first amplifier, and a first local oscillator. The first input end of the first mixer is connected to the first end of the first data selection switch. The second input end of the first mixer is connected to the first local oscillator. The first local oscillator is also connected to the first gating end of the seventh data selection switch. The output end of the first mixer is connected to the input end of the first frequency hopping filter. The output end of the first frequency hopping filter is connected to the input end of the first amplifier. The output end of the first amplifier is connected to the first end of the third data selection switch; The first mixer can mix the operating frequency input at least through the first end of the first data selection switch of the service radio frequency interface with the local oscillator frequency of the first local oscillator to obtain the air interface frequency to be transmitted. The first frequency hopping filter can perform filtering processing on the air interface frequency to be transmitted after mixing. The first amplifier can amplify the air interface frequency to be transmitted after the filtering processing and output it at least through the first end of the third data selection switch to the service air interface. The service air interface can transmit the amplified air interface frequency to be transmitted; When the second gating terminals of the fifth data selection switch, the second gating terminals of the sixth data selection switch, and the first gating terminal of the seventh data selection switch are simultaneously gated by the intelligent control unit, when the first terminals of the first data selection switch and the third data selection switch are simultaneously gated by the intelligent control unit, a transmission frequency conversion channel of the transmission frequency conversion unit is formed; the second terminals of the first data selection switch and the third data selection switch are directly connected, and when the second terminals of the first data selection switch and the third data selection switch are simultaneously gated by the intelligent control unit, a transmission direct-through channel of the transmission frequency conversion unit is formed; When the first gating terminals of the fifth data selection switch, the first gating terminals of the sixth data selection switch, and the first and second gating terminals of the seventh data selection switch are simultaneously gated by the intelligent control unit, when the first terminals of the first data selection switch and the third data selection switch are simultaneously gated by the intelligent control unit, a transmission frequency conversion channel of the transmission frequency conversion unit passing through the first duplexer and the second duplexer is formed; the second terminals of the first data selection switch and the third data selection switch are directly connected, and when the second terminals of the first data selection switch and the third data selection switch are simultaneously gated by the intelligent control unit, a transmission direct-through channel of the transmission frequency conversion unit passing through the first duplexer and the second duplexer is formed; The receiving frequency conversion unit includes a second hopping filter, a second amplifier, a second mixer, an intermediate frequency filter, and a second local oscillator. The input end of the second hopping filter is connected to the first terminal of the fourth data selection switch. The output end of the second hopping filter is connected to the input end of the second amplifier. The output end of the second amplifier is connected to the first input end of the second mixer. The second input end of the second mixer is connected to the second local oscillator. The second local oscillator is also connected to the second gating terminal of the seventh data selection switch. The output end of the second mixer is connected to the input end of the intermediate frequency filter. The output end of the intermediate frequency filter is connected to the first terminal of the second data selection switch; The second hopping filter can filter the receiving air interface frequency input at least through the first terminal of the fourth data selection switch of the service air interface. The second amplifier can amplify the filtered receiving air interface frequency. The second mixer can mix the amplified receiving air interface frequency with the local oscillator frequency of the second local oscillator to obtain the receiving operating frequency to be received. The intermediate frequency filter can perform intermediate frequency filtering on the receiving operating frequency to be received. The receiving operating frequency after intermediate frequency filtering is output to the service radio frequency interface at least through the first terminal of the second data selection switch. The service radio frequency interface can transmit the receiving operating frequency to be received; When the third gating terminal of the fifth data selection switch, the third gating terminal of the sixth data selection switch, and the first gating terminal of the seventh data selection switch are simultaneously gated by the intelligent control unit, when the first terminal of the third data selection switch and the first terminal of the fourth data selection switch are simultaneously gated by the intelligent control unit, a receiving frequency conversion channel of the receiving frequency conversion unit is formed; the second terminal of the third data selection switch is directly connected to the second terminal of the fourth data selection switch, and when the second terminal of the third data selection switch and the second terminal of the fourth data selection switch are simultaneously gated by the intelligent control unit, a receiving direct-through channel of the receiving frequency conversion unit is formed. When the first gating terminal of the fifth data selection switch, the first gating terminal of the sixth data selection switch, the first gating terminal and the second gating terminal of the seventh data selection switch are simultaneously gated by the intelligent control unit, when the first terminal of the third data selection switch and the first terminal of the fourth data selection switch are simultaneously gated by the intelligent control unit, a receiving frequency conversion channel of the receiving frequency conversion unit passing through the first duplexer and the second duplexer is formed; the second terminal of the third data selection switch is directly connected to the second terminal of the fourth data selection switch, and when the second terminal of the third data selection switch and the second terminal of the fourth data selection switch are simultaneously gated by the intelligent control unit, a receiving direct-through channel of the receiving frequency conversion unit passing through the first duplexer and the second duplexer is formed.

[0010] Further, the auxiliary frequency switching unit further includes: a signal conditioning unit, which is connected to the service radio frequency interface and is used to adjust the signal magnitude of the operating frequency input by the external device through the service radio frequency interface and to adjust the signal magnitude of the operating frequency output to the external device through the service radio frequency interface.

[0011] Further, the intelligent control unit is used to control the auxiliary frequency switching unit to perform bidirectional conversion between the operating frequency and the air interface frequency, including: When the auxiliary frequency switching unit is used to convert the operating frequency of the external device into the air interface frequency, the intelligent control unit is used to determine the local oscillator frequency of the auxiliary frequency switching unit according to the operating frequency of the external device and the current air interface frequency, and configure the local oscillator of the auxiliary frequency switching unit according to the local oscillator frequency. When the auxiliary frequency switching unit is used to convert the received air interface frequency into the operating frequency of the external device, the intelligent control unit is used to determine the local oscillator frequency of the auxiliary frequency switching unit according to the air interface frequency and the current operating frequency of the external device, and configure the local oscillator of the auxiliary frequency switching unit according to the local oscillator frequency.

[0012] As another aspect of the present invention, there is provided a service base station node, which includes a service base station and a service base station guard module. The service base station guard module is communicatively connected to the service base station, and the service base station guard module includes the collaborative frequency switching control device described above.

[0013] As another aspect of the present invention, there is provided a service terminal node, which includes a service terminal and a service terminal guard module. The service terminal guard module is communicatively connected to the service terminal, and the service terminal guard module includes the collaborative frequency switching control device described above.

[0014] As another aspect of the present invention, there is provided a communication system, which includes the service base station node and the service terminal node described above. The service base station node and the service terminal node are communicatively connected. The service base station in the service base station node and the service terminal in the service terminal node can form a service network, and the service base station guard module in the service base station node and the service terminal guard module in the service terminal node can form a guard network.

[0015] The collaborative frequency switching control device provided by the present invention can be integrated with the base station and / or the terminal, provide an independent collaborative frequency control communication path for the base station and the terminal, bypass the complex air interface signaling interaction process between the base station and the terminal, realize network-level on-demand fast collaborative frequency switching, and help the commercial cellular network avoid interference in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention.

[0017] Figure 1 It is a structural block diagram of the collaborative frequency switching control device provided by the present invention.

[0018] Figure 2 It is a structural block diagram of the auxiliary frequency switching unit provided by the present invention.

[0019] Figure 3 It is a structural block diagram of the auxiliary frequency switching unit in the collaborative frequency switching control device under the TDD system provided by the present invention.

[0020] Figure 4 It is a structural block diagram of the auxiliary frequency switching unit in the collaborative frequency switching control device under the FDD system provided by the present invention.

[0021] Figure 5 It is a structural block diagram of the auxiliary frequency switching unit in the collaborative frequency switching control device that is compatible with both the TDD system and the FDD system provided by the present invention.

[0022] Figure 6 This is a structural block diagram of the service base station node provided by the present invention.

[0023] Figure 7 This is a structural block diagram of the service terminal node provided by the present invention.

[0024] Figure 8 This is a structural block diagram of the communication system provided by the present invention. Detailed implementation manners

[0025] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of the present invention here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] Currently, under the 3GPP standard system, the operating frequency of a cell, as an important system parameter, will be periodically sent in the air interface system message. Once a cell is established, its operating frequency generally does not change, unless cell reconfiguration is performed, which involves a complex base station configuration management process and usually has a large delay, generally at the minute level.

[0029] Based on this, a cooperative frequency switching control device is provided in this embodiment. Figure 1 This is a structural block diagram of the cooperative frequency switching control device 10 provided according to the embodiment of the present invention, as Figure 1As shown in the figure, it includes: an auxiliary frequency switching unit 100, a communication unit 200, a spectrum sensing unit 300, an intelligent control unit 400, and a clock unit 500. The auxiliary frequency switching unit 100, the communication unit 200, the spectrum sensing unit 300, and the clock unit 500 are all communicatively connected to the intelligent control unit 400. The clock unit 500 and the auxiliary frequency switching unit 100 are both communicatively connected to the communication unit 200.

[0030] The intelligent control unit 400 is used to control the spectrum sensing unit to sense the air interface frequency, control the communication unit to share its own air interface candidate frequency status with the guard network, and control the auxiliary frequency switching unit to perform bidirectional transformation between the operating frequency and the air interface frequency. The guard network is a communication network formed between multiple cooperative frequency switching control devices.

[0031] Specifically, the intelligent control unit 400 obtains its own air interface spectrum situation through the spectrum sensing unit 300, shares and exchanges the spectrum situation between spectrum situation modules with other cooperative frequency switching control devices through the communication unit 200 to form a cooperative frequency usage strategy, and generates specific air interface operating frequency change moments and specific frequency point numbers to be used based on this frequency usage strategy, and spreads them to the intelligent control units of other cooperative frequency switching control devices through the communication unit to cooperatively control the local oscillator frequencies of the auxiliary frequency switching units of different cooperative frequency switching control devices to realize real-time changes in the air interface frequency of the service network and avoid interference; in addition, the intelligent control unit can also perform cooperative control on the analog base station and the analog terminal through the control interface.

[0032] The communication unit 200 establishes a communication connection with the guard network through the guard air interface, is used to maintain the network-level time synchronization relationship of the guard network, and is used to transmit the frequency switching instructions in the guard network.

[0033] In the embodiment of the present invention, the communication unit 200 mainly interacts with other cooperative frequency switching control devices to construct a guard network, establishes an interaction channel between cooperative frequency switching control devices, and maintains the network-level time synchronization relationship between cooperative frequency switching control devices; the communication units of different cooperative frequency switching control devices can be independently networked communication units, provide bearer services externally through service interfaces, assist in expanding the coverage of the service network, and at the same time, when the service network is interrupted, can also provide guaranteed communication services.

[0034] The auxiliary frequency switching unit 100 is connected to an external device through a service radio frequency interface, and is used to assist the external device to perform bidirectional transformation between the operating frequency and the air interface frequency under the control of the intelligent control unit. The external device includes a service base station or a service terminal; In an embodiment of the present invention, the auxiliary frequency switching unit 100 can, under the control of the intelligent control unit 400, assist an external device (service base station / service terminal) connected to the service radio frequency interface in performing a two-way transformation of the operating frequency to the air interface frequency at a given moment, and the transformation process is transparent to the external device.

[0035] The clock unit 500 is connected to the external device through a timing interface and is used to provide a timing signal for synchronization timing to the external device; In an embodiment of the present invention, it should be noted that the clock unit 500 can support providing synchronous timing services for external devices through the timing interface; at the same time, the clock unit also provides clock services for other units of the collaborative frequency switching control device. When an external synchronization signal is input, the clock unit can adjust the local clock based on the external synchronization signal; when no external synchronization signal is input, the clock unit can adjust the local clock according to the output of the communication unit.

[0036] The spectrum sensing unit 300 is used to sense the air interface candidate frequency status of the guard network under the control of the intelligent control unit and share the sensing result through the guard interface.

[0037] In an embodiment of the present invention, it should be noted that the guard network is mainly a network composed of the collaborative frequency switching control device, and the main function of the guard network is to be integrated with the service base station or service terminal to provide a guard ability for the service base station or service terminal to avoid interference through collaborative frequency switching. In an embodiment of the present invention, the service network is mainly a wireless communication network composed of service base stations and service terminals for service bearing; typical representatives include cellular networks such as 4G and 5G.

[0038] In addition, in an embodiment of the present invention, the operating frequency mainly refers to the frequency used for the normal operation of the service network, which is usually configured on the service base station side with a configuration granularity of a cell, and the service terminal locks this frequency to access the cell through the network access process specified by the protocol. The air interface frequency mainly refers to the frequency actually used by the air interface of the service network, and this frequency is obtained by transforming the operating frequency through the collaborative frequency switching control device; the collaborative frequency switching control device in the transmission direction transforms the operating frequency into the air interface frequency; the collaborative frequency switching control device in the reception direction transforms the air interface frequency into the operating frequency.

[0039] It should be noted that the service air interface mainly refers to the input / output interface of the air interface frequency of the service network, that is, the actual air interface of the service network; the guard air interface mainly refers to the air interface of the guard network, which is mainly multiplexed by the communication unit and the spectrum sensing unit.

[0040] In summary, the collaborative frequency switching control device provided by the present invention can be integrated with a base station and / or a terminal, providing an independent collaborative frequency control communication path for the base station and the terminal, bypassing the complex air interface signaling interaction process between the base station and the terminal, realizing network-level on-demand fast collaborative frequency switching, and helping commercial cellular networks to avoid interference in real time.

[0041] Specifically, as Figure 2 shown, the auxiliary frequency switching unit 100 at least includes: a selection switch unit 110, a transmission frequency conversion unit 120, and a reception frequency conversion unit 130. The transmission frequency conversion unit 120 and the reception frequency conversion unit 130 are both connected to the selection switch unit 110, and the selection switch unit 110, the transmission frequency conversion unit 120, and the reception frequency conversion unit 130 are all connected to the intelligent control unit 400; The selection switch unit 110 is connected to the service air interface, and can select the transmission channel of the transmission frequency conversion unit and the reception channel of the reception frequency conversion unit under the control of the intelligent control unit 400. The transmission channel of the transmission frequency conversion unit at least includes a transmission direct-through channel and a transmission frequency conversion channel, and the reception channel of the reception frequency conversion unit at least includes a reception direct-through channel and a reception frequency conversion channel; The transmission frequency conversion unit 120 is used to directly transmit the operating frequency input from the service radio frequency interface to the service air interface when the intelligent control unit 400 selects the transmission direct-through channel, and is used to output the operating frequency input from the service radio frequency interface to the service air interface after frequency conversion when the intelligent control unit selects the transmission frequency conversion channel; The reception frequency conversion unit 130 is used to directly transmit the air interface frequency input from the service air interface to the service radio frequency interface when the intelligent control unit 400 selects the reception direct-through channel, and is used to output the air interface frequency input from the service air interface to the service radio frequency interface after frequency conversion when the intelligent control unit selects the reception frequency conversion channel.

[0042] In the embodiment of the present invention, it should be understood that the auxiliary frequency switching unit 100 is the core functional unit for the collaborative frequency switching control device to assist external devices such as service base stations or service terminals in frequency switching control. By setting the selection switch unit, the transmission channel of the transmission frequency conversion unit and the reception channel of the reception frequency conversion unit can be selected under the control of the intelligent control unit.

[0043] It should be noted that the intelligent control unit 400 can control the selection switch unit to select the transmission direct-through channel of the transmission frequency conversion unit and / or the reception direct-through channel of the reception frequency conversion unit when the current service network is not interfered; while when the current service network is interfered, it controls the selection switch unit to select the transmission frequency conversion channel of the transmission frequency conversion unit and / or the reception frequency conversion channel of the reception frequency conversion unit to perform frequency switching to avoid interference.

[0044] Specifically, the auxiliary frequency switching unit 100 further includes: a signal adjustment unit 140, which is connected to the service radio frequency interface and is used to adjust the signal magnitude of the operating frequency input by the external device through the service radio frequency interface and to adjust the signal magnitude of the operating frequency output to the external device through the service radio frequency interface.

[0045] In an embodiment of the present invention, the signal adjustment unit 140 may specifically be an adjustable attenuator, and the adjustable attenuator can, under the control of the intelligent control unit, adjust the signal magnitude of the input operating frequency or the signal magnitude of the output operating frequency to a target range.

[0046] Specifically, the service radio frequency interface is externally connected to a service base station or a service terminal, and the intelligent control unit adjusts the operating frequency signal input to the auxiliary frequency switching unit or output to the service base station or the service terminal to a suitable range by controlling the adjustable attenuator.

[0047] As a specific implementation manner of the auxiliary frequency switching unit, as Figure 3 shown, it is a structural block diagram of the auxiliary frequency switching unit in the collaborative frequency switching control device under the TDD system. Specifically, in this implementation manner, the selection switch unit 110 includes a first data selection switch 111 and a second data selection switch 112. The transmission frequency conversion unit 120 includes a first mixer 121, a first frequency hopping filter 122, a first amplifier 123, and a first local oscillator 124. The first input end 1 of the first mixer 121 is connected to the first end 1 of the first data selection switch 111, the second input end 2 of the first mixer 121 is connected to the first local oscillator 124, the output end of the first mixer 121 is connected to the input end of the first frequency hopping filter 122, the output end of the first frequency hopping filter 122 is connected to the input end of the first amplifier 123, and the output end of the first amplifier 123 is connected to the first end 1 of the second data selection switch 112. The first mixer 121 can mix the operating frequency input from the service radio frequency interface through the first terminal 1 of the first data selection switch 111 with the first local oscillator frequency of the first local oscillator 124 to obtain the air interface frequency to be transmitted. The first hopping filter 122 can filter the air interface frequency to be transmitted after mixing. The first amplifier 123 can amplify the filtered air interface frequency to be transmitted and output it through the first terminal 1 of the second data selection switch 112 to the service air interface, and the service air interface can transmit the amplified air interface frequency to be transmitted. When the first terminal 1 of the first data selection switch 111 and the first terminal 1 of the second data selection switch 112 are simultaneously selected and enabled by the intelligent control unit 400, a transmission frequency conversion channel of the transmission frequency conversion unit 120 is formed. The second terminal 2 of the first data selection switch 111 is directly connected to the second terminal 2 of the second data selection switch 112, and when the second terminal 2 of the first data selection switch 111 and the second terminal 2 of the second data selection switch 112 are simultaneously selected and enabled by the intelligent control unit, a transmission direct-through channel of the transmission frequency conversion unit 120 is formed. The receiving frequency conversion unit 130 includes a second hopping filter 131, a second amplifier 132, a second mixer 133, and an intermediate frequency filter 134. The input end of the second hopping filter 131 is connected to the third terminal 3 of the second data selection switch 112. The output end of the second hopping filter 131 is connected to the input end of the second amplifier 132. The output end of the second amplifier 132 is connected to the first input end of the second mixer 133. The second input end of the second mixer 133 is connected to the first local oscillator 124. The output end of the second mixer 133 is connected to the input end of the intermediate frequency filter 134. The output end of the intermediate frequency filter 134 is connected to the third terminal 3 of the first data selection switch 111. The second hopping filter 131 can filter the received air interface frequency input from the service air interface through the third terminal 3 of the second data selection switch 112. The second amplifier 132 can amplify the filtered received air interface frequency. The second mixer 133 can mix the amplified received air interface frequency with the second local oscillator frequency of the first local oscillator 124 to obtain the operating frequency to be received, and the operating frequency to be received is output through the third terminal 3 of the first data selection switch 111 to the service radio frequency interface, and the service radio frequency interface can transmit the operating frequency to be received. When the third terminals 3 of the first data selection switch 111 and the third terminals 3 of the second data selection switch 112 are simultaneously selected and enabled by the intelligent control unit 400, a reception frequency conversion channel of the reception frequency conversion unit 130 is formed; the fourth terminals 4 of the first data selection switch 111 and the fourth terminals 4 of the second data selection switch 112 are directly connected, and when the fourth terminals 4 of the first data selection switch 111 and the fourth terminals 4 of the second data selection switch 112 are simultaneously selected and enabled by the intelligent control unit 400, a reception direct-through channel of the reception frequency conversion unit 130 is formed.

[0048] It should be noted that in this embodiment, both the first data selection switch 111 and the second data selection switch 112 can be four-to-one data selection switches.

[0049] In the embodiments of the present invention, as Figure 3 shown, in the transmission direction (Tx direction), the intelligent control unit can, by controlling the first data selection switch 111 and the second data selection switch 112, implement two different functions: bypass of the transmission direct-through channel (i.e., Tx channel 1) and frequency conversion of the transmission frequency conversion channel (Tx channel 2). The bypass of Tx channel 1 means that the signal from the service radio frequency interface is directly sent out at the service air interface through Tx channel 1 without frequency conversion; the frequency conversion of Tx channel 2 means that the signal from the service radio frequency interface is sent out at the service air interface after frequency conversion, filtering, and amplification through Tx channel 2.

[0050] In the reception direction (Rx direction), the intelligent control unit can, by controlling the first data selection switch 111 and the second data selection switch 112, implement two different functions: bypass of the reception direct-through channel (corresponding to Rx channel 1) and frequency conversion of the reception frequency conversion channel (corresponding to Rx channel 2). The bypass of Rx channel 1 means that the signal from the service air interface is directly sent out at the service radio frequency interface through Rx channel 1 without frequency conversion; the frequency conversion of Rx channel 2 means that the signal from the service air interface is sent out at the service radio frequency interface after filtering, amplification, frequency conversion, and intermediate frequency filtering through Rx channel 2.

[0051] The intelligent control unit 400 can achieve the transceiver state switching and channel selection of the auxiliary frequency switching unit 100 by controlling the first data selection switch 111 and the second data selection switch 112. The timing of the transceiver state switching is consistent with the timing of the air interface transceiver switching. By changing the frequency of the local oscillator, the transceiver signals can be quickly locked to the expected frequencies (in the Tx direction, the current operating frequency of the service base station or service terminal is mixed to the air interface frequency of the service network; in the Rx direction, the received air interface frequency of the service network is mixed to the current operating frequency of the service base station or service terminal). By controlling the first hopping filter and the second hopping filter, filtering of specific frequency signals can be achieved. By controlling the first amplifier and the second amplifier, adjustment of the effective signal amplitude can be achieved.

[0052] It should be noted that the intelligent control unit supports controlling the auxiliary frequency switching unit to perform real-time frequency switching at the moment when the frequency switching takes effect, so as to achieve network-level coordinated frequency change.

[0053] As another specific embodiment of the auxiliary frequency switching unit of the present invention, as Figure 4 shown, it is the structural block diagram of the auxiliary frequency switching unit in the coordinated frequency switching control device under the FDD system. Specifically, in this embodiment, the auxiliary frequency switching unit 100 further includes a first duplexer 150 and a second duplexer 160. The first duplexer 150 is arranged at one end close to the service radio frequency interface and is connected to the service radio frequency interface. The second duplexer 160 is arranged at one end close to the service air interface and is connected to the service air interface. The first duplexer 150 can output the operating frequency input from the service radio frequency interface to the transmit frequency conversion unit 120, and can output the air interface frequency output from the receive frequency conversion unit 130 to the service radio frequency interface. The second duplexer 160 can output the air interface frequency output from the transmit frequency conversion unit 120 to the service air interface, and can output the air interface frequency input from the service air interface to the receive frequency conversion unit 130. The selection switch unit 110 includes a first data selection switch 111, a second data selection switch 112, a third data selection switch 113, and a fourth data selection switch 114. The first data selection switch 111 and the second data selection switch 112 are both connected to the first duplexer 150. The third data selection switch 113 and the fourth data selection switch 114 are both connected to the second duplexer 160. The transmitting frequency conversion unit 120 includes a first mixer 121, a first hopping filter 122, a first amplifier 123, and a first local oscillator 124. The first input end of the first mixer 121 is connected to the first end 1 of the first data selection switch 111. The second input end of the first mixer 121 is connected to the first local oscillator 124. The output end of the first mixer 121 is connected to the input end of the first hopping filter 122. The output end of the first hopping filter 122 is connected to the input end of the first amplifier 123. The output end of the first amplifier 123 is connected to the first end 1 of the third data selection switch 113. The first mixer 121 can mix the operating frequency input from the service radio frequency interface through the first duplexer 150 and the first end 1 of the first data selection switch 111 with the local oscillator frequency of the first local oscillator 124 to obtain the air interface frequency to be transmitted. The first hopping filter 122 can filter the air interface frequency to be transmitted after mixing. The first amplifier 123 can amplify the air interface frequency to be transmitted after the filtering process and output it to the service air interface through the first end 1 of the third data selection switch 113 and the second duplexer 160. The service air interface can transmit the amplified air interface frequency to be transmitted. When the first end 1 of the first data selection switch 111 and the first end 1 of the third data selection switch 113 are simultaneously selected and enabled by the intelligent control unit 400, a transmitting frequency conversion channel of the transmitting frequency conversion unit 120 passing through the first duplexer 150 and the second duplexer 160 is formed. The second end 2 of the first data selection switch 111 is directly connected to the second end 2 of the third data selection switch 113. When the second end 2 of the first data selection switch 111 and the second end 2 of the third data selection switch 113 are simultaneously selected and enabled by the intelligent control unit 400, a transmitting direct-through channel of the transmitting frequency conversion unit 120 passing through the first duplexer 150 and the second duplexer 160 is formed. The receiving frequency conversion unit 130 includes a second hopping filter 131, a second amplifier 132, a second mixer 133, an intermediate frequency filter 134, and a second local oscillator 135. The input end of the second hopping filter 131 is connected to the first end 1 of the fourth data selection switch 114. The output end of the second hopping filter 131 is connected to the input end of the second amplifier 132. The output end of the second amplifier 132 is connected to the first input end of the second mixer 133. The second input end of the second mixer 133 is connected to the second local oscillator 135. The output end of the second mixer 133 is connected to the input end of the intermediate frequency filter 134. The output end of the intermediate frequency filter 134 is connected to the first end 1 of the second data selection switch 112. The second hopping frequency filter 131 can perform filtering processing on the received air interface frequency input from the service air interface after it is input through the first end 1 of the second duplexer 160 and the fourth data selection switch 114. The second amplifier 132 can amplify the received air interface frequency after the filtering processing. The second mixer 133 can mix the amplified received air interface frequency with the local oscillator frequency of the second local oscillator 135 to obtain the received operating frequency to be received. The intermediate frequency filter 134 can perform intermediate frequency filtering on the received operating frequency to be received. The received operating frequency after the intermediate frequency filtering is output to the service radio frequency interface through the first end 1 of the second data selection switch 112 and the first duplexer 150, and the service radio frequency interface can send out the received operating frequency to be received; When the first end 1 of the third data selection switch 113 and the first end 1 of the fourth data selection switch 114 are simultaneously gated by the intelligent control unit 400, a receiving frequency conversion channel of the receiving frequency conversion unit 130 passing through the first duplexer 150 and the second duplexer 160 is formed; the second end 2 of the third data selection switch 113 is directly connected to the second end 2 of the fourth data selection switch 114, and when the second end 2 of the third data selection switch 113 and the second end 2 of the fourth data selection switch 114 are simultaneously gated by the intelligent control unit 400, a receiving direct-through channel of the receiving frequency conversion unit 130 passing through the first duplexer 150 and the second duplexer 160 is formed.

[0054] In the embodiment of the present invention, as Figure 4 shown, for the FDD system service base station and service terminal, specifically, it can be understood that on the basis of the structure of the TDD system described above, two duplexers ( Figure 4 the first duplexer 150 and the second duplexer 160 in it) are added to isolate the Tx and Rx channels; two independent local oscillators ( Figure 4 the first local oscillator 124 and the second local oscillator 135 in it) are used to independently control the frequency conversion of the Tx / Rx channels; the Tx channel and the Rx channel can use their respective independent switches to perform routing inside the channels ( Figure 4 the first data selection switch 111 and the third data selection switch 113 select Tx channel 1 or Tx channel 2, and the second data selection switch 112 and the third data selection switch 114 select Rx channel 1 or Rx channel 2).

[0055] As another specific implementation manner of the auxiliary frequency switching unit of the present invention, as Figure 5As shown, it is a structural block diagram of an auxiliary frequency switching unit in a coordinated frequency switching control device that is compatible with both the TDD system and the FDD system. Specifically, in this embodiment, the auxiliary frequency switching unit 100 further includes a first duplexer 150 and a second duplexer 160. The first duplexer 150 is disposed at one end close to the service radio frequency interface and is connected to the service radio frequency interface. The second duplexer 160 is disposed at one end close to the service air interface and is connected to the service air interface. The first duplexer 150 can output the operating frequency input from the service radio frequency interface to the transmit frequency conversion unit 120, and can output the air interface frequency output from the receive frequency conversion unit 130 to the service radio frequency interface. The second duplexer 160 can output the air interface frequency output from the transmit frequency conversion unit 120 to the service air interface, and can output the air interface frequency input from the service air interface to the receive frequency conversion unit 130. The selection switch unit 110 includes a first data selection switch 111, a second data selection switch 112, a third data selection switch 113, a fourth data selection switch 114, a fifth data selection switch 115, a sixth data selection switch 116, and a seventh data selection switch 117. Both the first data selection switch 111 and the second data selection switch 112 are connected to the first duplexer 150. Both the third data selection switch 113 and the fourth data selection switch 114 are connected to the second duplexer 160. The input and output terminals of the fifth data selection switch 115 are connected to the service radio frequency interface. The first gating terminal 1 of the fifth data selection switch 115 is connected to the first duplexer 150. The second gating terminal 2 of the fifth data selection switch 115 is connected to the first data selection switch 111. The third gating terminal 3 of the fifth data selection switch 115 is connected to the second data selection switch 112. The input and output terminals of the sixth data selection switch 116 are connected to the service air interface. The first gating terminal 1 of the sixth data selection switch 116 is connected to the second duplexer 160. The second gating terminal 2 of the sixth data selection switch 116 is connected to the third data selection switch 113. The third gating terminal 3 of the sixth data selection switch 116 is connected to the fourth data selection switch 114. The said transmission frequency conversion unit 120 includes a first mixer 121, a first hopping filter 122, a first amplifier 123 and a first local oscillator 124. The first input terminal of the first mixer 121 is connected to the first terminal 1 of the first data selection switch 111. The second input terminal of the first mixer 121 is connected to the first local oscillator 124. The first local oscillator 124 is also connected to the first gating terminal 1 of the seventh data selection switch 117. The output terminal of the first mixer 121 is connected to the input terminal of the first hopping filter 122. The output terminal of the first hopping filter 122 is connected to the input terminal of the first amplifier 123. The output terminal of the first amplifier 123 is connected to the first terminal 1 of the third data selection switch 113; The first mixer 121 can mix the operating frequency input at least through the first terminal 1 of the first data selection switch 111 of the service radio frequency interface with the local oscillator frequency of the first local oscillator 124 to obtain the air interface frequency to be transmitted. The first hopping filter 122 can perform filtering processing on the air interface frequency to be transmitted after mixing. The first amplifier 123 can amplify the air interface frequency to be transmitted after the filtering processing and output it to the service air interface at least through the first terminal 1 of the third data selection switch 113. The service air interface can transmit the amplified air interface frequency to be transmitted; When the second gating terminal 2 of the fifth data selection switch 115, the second gating terminal 2 of the sixth data selection switch 116 and the first gating terminal 1 of the seventh data selection switch 117 are simultaneously gated by the intelligent control unit 400, when the first terminal 1 of the first data selection switch 111 and the first terminal 1 of the third data selection switch 113 are simultaneously gated by the intelligent control unit 400, a transmission frequency conversion channel of the transmission frequency conversion unit 120 is formed. The second terminal 2 of the first data selection switch 111 is directly connected to the second terminal 2 of the third data selection switch 113. When the second terminal 2 of the first data selection switch 111 and the second terminal 2 of the third data selection switch 113 are simultaneously gated by the intelligent control unit 400, a transmission direct-through channel of the transmission frequency conversion unit 120 is formed; When the first gating terminals 1 of the fifth data selection switch 115, the first gating terminals 1 of the sixth data selection switch 116, and the first and second gating terminals 1 and 2 of the seventh data selection switch 117 are simultaneously gated by the intelligent control unit 400, when the first terminal 1 of the first data selection switch 111 and the first terminal 1 of the third data selection switch 113 are simultaneously gated by the intelligent control unit 400, a transmission frequency conversion channel of the transmission frequency conversion unit 120 through the first duplexer 150 and the second duplexer 160 is formed; the second terminal 2 of the first data selection switch 111 is directly connected to the second terminal 2 of the third data selection switch 113, and when the second terminal 2 of the first data selection switch 111 and the second terminal 2 of the third data selection switch 113 are simultaneously gated by the intelligent control unit 400, a transmission direct-through channel of the transmission frequency conversion unit 120 through the first duplexer 150 and the second duplexer 160 is formed; The receiving frequency conversion unit 130 includes a second hopping filter 131, a second amplifier 132, a second mixer 133, an intermediate frequency filter 134, and a second local oscillator 135. The input end of the second hopping filter 131 is connected to the first terminal 1 of the fourth data selection switch 114. The output end of the second hopping filter 131 is connected to the input end of the second amplifier 132. The output end of the second amplifier 132 is connected to the first input end of the second mixer 133. The second input end of the second mixer 133 is connected to the second local oscillator 135. The second local oscillator 135 is also connected to the second gating terminal 2 of the seventh data selection switch 117. The output end of the second mixer 133 is connected to the input end of the intermediate frequency filter 134. The output end of the intermediate frequency filter 134 is connected to the first terminal 1 of the second data selection switch 112; The second hopping filter 131 can filter the receiving air interface frequency input at least through the first terminal 1 of the fourth data selection switch 114 for the service air interface. The second amplifier 132 can amplify the filtered receiving air interface frequency. The second mixer 133 can mix the amplified receiving air interface frequency with the local oscillator frequency of the second local oscillator 135 to obtain the receiving working frequency to be received. The intermediate frequency filter 134 can perform intermediate frequency filtering on the receiving working frequency to be received. The receiving working frequency to be received after intermediate frequency filtering is output to the service radio frequency interface at least through the first terminal 1 of the second data selection switch 112, and the service radio frequency interface can transmit the receiving working frequency to be received; When the third strobe terminal 3 of the fifth data selection switch 115, the third strobe terminal 3 of the sixth data selection switch 116, and the first strobe terminal 1 of the seventh data selection switch 117 are simultaneously strobed by the intelligent control unit 400, when the first terminal 1 of the third data selection switch 113 and the first terminal 1 of the fourth data selection switch 114 are simultaneously strobed by the intelligent control unit 400, a receive frequency conversion channel of the receive frequency conversion unit 130 is formed; the second terminal 2 of the third data selection switch 113 is directly connected to the second terminal 2 of the fourth data selection switch 114, and when the second terminal 2 of the third data selection switch 113 and the second terminal 2 of the fourth data selection switch 114 are simultaneously strobed by the intelligent control unit 400, a receive direct-through channel of the receive frequency conversion unit 130 is formed; When the first strobe terminal 1 of the fifth data selection switch 115, the first strobe terminal 1 of the sixth data selection switch 116, the first strobe terminal 1 and the second strobe terminal 2 of the seventh data selection switch 117 are simultaneously strobed by the intelligent control unit 400, when the first terminal 1 of the third data selection switch 113 and the first terminal 1 of the fourth data selection switch 114 are simultaneously strobed by the intelligent control unit 400, a receive frequency conversion channel of the receive frequency conversion unit 130 passing through the first duplexer 150 and the second duplexer 160 is formed; the second terminal 2 of the third data selection switch 113 is directly connected to the second terminal 2 of the fourth data selection switch 114, and when the second terminal of the third data selection switch 113 and the second terminal of the fourth data selection switch 114 are simultaneously strobed by the intelligent control unit 400, a receive direct-through channel of the receive frequency conversion unit 130 passing through the first duplexer 150 and the second duplexer 160 is formed.

[0056] In this embodiment, specifically, it can be understood that adding the fifth data selection switch 115, the sixth data selection switch 116, and the seventh data selection switch 117 to the circuit shown in Figure 4 can achieve the compatibility of FDD and TDD systems. Among them, through the fifth data selection switch 115 and the sixth data selection switch 116, it is possible to achieve that in the TDD system, it does not pass through the duplexer, and in the FDD system, it passes through the duplexer; through the seventh data selection switch 117, it is possible to achieve that in the TDD system, the transceiver channels share a local oscillator (the first local oscillator 124), and in the FDD system, the transceiver uses independent local oscillators (the first local oscillator 1 and the second local oscillator 2) respectively.

[0057] Specifically, the intelligent control unit is used to control the auxiliary frequency switching unit to perform bidirectional conversion between the operating frequency and the air interface frequency, including: When the auxiliary frequency switching unit is used to change the operating frequency of the external device to the air interface frequency, the intelligent control unit is used to determine the local oscillator frequency of the auxiliary frequency switching unit according to the operating frequency of the external device and the current air interface frequency, and configure the local oscillator of the auxiliary frequency switching unit according to the local oscillator frequency; When the auxiliary frequency switching unit is used to change the received air interface frequency to the operating frequency of the external device, the intelligent control unit is used to determine the local oscillator frequency of the auxiliary frequency switching unit according to the air interface frequency and the current operating frequency of the external device, and configure the local oscillator of the auxiliary frequency switching unit according to the local oscillator frequency.

[0058] It should be understood that the local oscillator frequency of the local oscillator of the auxiliary frequency switching unit is configured by the intelligent control unit. When performing transmission channel frequency switching, the intelligent control unit can determine the local oscillator frequency of the auxiliary frequency switching unit according to the operating frequency of the external device (such as a service base station) and the air interface frequency sensed by the frequency sensing unit. At this time, the local oscillator frequency = air interface frequency + operating frequency, or the local oscillator frequency = Abs(air interface frequency - operating frequency), where Abs represents taking the absolute value. When performing reception channel frequency switching, for example, taking the intelligent control unit of the co-frequency switching control device located at the service terminal as an example, which can calculate and set the local oscillator frequency of the auxiliary frequency switching unit according to the selected cell operating frequency less than and the cell air interface frequency, the specific calculation method is still the local oscillator frequency = air interface frequency + operating frequency, or the local oscillator frequency = Abs(air interface frequency - operating frequency), where Abs represents taking the absolute value.

[0059] Regarding the communication unit in the embodiments of the present invention, it should also be noted that the communication units of different co-frequency switching control devices can form a guard network independent of the service network. This network can be a distributed multi-hop ad hoc network or other types of networks, and the present invention does not specifically limit it. Through this guard network, network-level time synchronization can be established between co-frequency switching control devices, enabling each co-frequency switching control device in the guard network to comply with the same time reference, laying a foundation for subsequent synchronous switching of the operating frequencies of the entire network; at the same time, through this guard network, frequency switching instructions can be issued to other co-frequency switching control devices in the network, and the instructions indicate the synchronization effective moment of the network operating frequency switching and the specific target operating frequency. The communication unit sends the received instruction information to the intelligent control unit for controlling the auxiliary frequency switching unit to perform frequency conversion according to the effective moment indicated by the instruction.

[0060] The guard network can work independently of the service network and provide bearer services externally through the service interface. When a node exceeds the coverage range of the service network, the coverage of the service network can be extended through the relay between the guard network and the service network. Even when the service network is interrupted, the guard network can provide bearer services independently externally, further enhancing the reliability of the entire network.

[0061] In summary, the collaborative frequency switching control device provided by the present invention can quickly identify interference in fixed-frequency networks such as cellular networks, and perform targeted network-level frequency synchronization switching to avoid interference in real time, greatly improving the anti-interference ability of the entire network. In addition, the devices deployed in different locations can independently form a bearer network different from the cellular network. When the cellular network fails, this network can be used as a backup means for communication to further improve the survivability of the entire system.

[0062] As another embodiment of the present invention, a service base station node 20 is provided, as Figure 6 shown, which includes a service base station 21 and a service base station guard module 22. The service base station guard module 22 is communicatively connected to the service base station 21, and the service base station guard module 22 includes the collaborative frequency switching control device 10 described above.

[0063] In the embodiment of the present invention, the service base station guard module 22 is taken as the collaborative frequency switching control device 10 described above as an example for illustration.

[0064] Specifically, the service base station node 20 is composed of a service base station 21 and a service base station guard module 22. The service base station 21 is interconnected with the service radio frequency interface of the collaborative frequency switching control device 10 through a radio frequency interface. The transmitted signal (operating frequency) is frequency-converted by the auxiliary frequency switching unit and then sent out at the service air interface (air interface frequency); the signal received at the service air interface (air interface frequency) is frequency-converted by the auxiliary frequency switching unit and then sent to the radio frequency interface of the service base station through the service radio frequency interface (operating frequency). The entire process is transparent to the service base station 21. The operating frequency of the service base station 21 is determined by the device capabilities and configurations, and the air interface frequency of the service base station node 20 is obtained by mixing the operating frequency of the service base station 21 with the local oscillator of the auxiliary frequency switching unit.

[0065] The time synchronization signal of the service base station 21 comes from the service base station guard module 22. The guard network formed by the communication units between different service base station guard modules 22 can achieve guard network-level time synchronization, so different service base stations can maintain time synchronization. In addition, the service base station guard module 22 can also achieve time synchronization by receiving an external clock signal (such as an external Beidou, 1588, etc. external synchronization source) through an external synchronization interface. The service base station guard module 22 with an external synchronization source connected is preferentially selected as the synchronization source of the guard network.

[0066] The service base station node provided by the present invention can quickly identify interference in fixed-frequency networks such as cellular networks and perform targeted network-level frequency synchronization switching to avoid interference in real time due to the adoption of the collaborative frequency switching control device described above in its service base station protection module, thus greatly enhancing the anti-interference ability of the entire network.

[0067] As another embodiment of the present invention, a service terminal node 30 is provided, as Figure 7 shown, which includes a service terminal 31 and a service terminal protection module 32. The service terminal protection module 32 is communicatively connected to the service terminal 31, and the service terminal protection module 32 includes the collaborative frequency switching control device 10 described above.

[0068] In the embodiment of the present invention, the service terminal protection module 32 is taken as an example of the collaborative frequency switching control device 10 described above for illustration.

[0069] Specifically, the service terminal node 30 is composed of a service terminal 31 and a service terminal protection module 32. The service terminal 31 is interconnected with the service radio frequency interface of the collaborative frequency switching control device 10 through a radio frequency interface. The transmitted signal (operating frequency) is frequency-converted by the auxiliary frequency switching unit and then sent out at the service air interface (air interface frequency); the signal received at the service air interface (air interface frequency) is frequency-converted by the auxiliary frequency switching unit and then sent to the radio frequency interface of the service terminal through the service radio frequency interface (operating frequency). The whole process is transparent to the service terminal. The operating frequency of the service terminal 31 is determined by the service terminal protocol stack, and the local oscillator and channel selection of the auxiliary frequency switching unit of the collaborative frequency switching control device 10 are consistent with those of the corresponding auxiliary frequency switching unit of the collaborative frequency switching control device 10.

[0070] The service terminal is synchronized with the service base station. Therefore, there is no need for the service terminal protection module to time the service terminal, and the service terminal protection module does not need to connect an external synchronization source through an external synchronization interface; the service terminal protection module is time-synchronized with the protection network formed by the communication unit with its own affiliated service base station protection module. The service terminal protection module provides service interfaces for peripherals / applications to use. When a peripheral / application discovers that the communication provided by the service terminal is interrupted, it can independently decide whether to switch to the protection network for bearer.

[0071] Therefore, the service terminal provided by the present invention can quickly identify interference in fixed-frequency networks such as cellular networks and perform targeted network-level frequency synchronization switching to avoid interference in real time due to the adoption of the collaborative frequency switching control device described above in its service terminal protection module, thus greatly enhancing the anti-interference ability of the entire network.

[0072] As another embodiment of the present invention, a communication system 1 is provided, as Figure 8As shown in the figure, it includes the service base station node 20 described above and the service terminal node 30 described above. The service base station node 20 and the service terminal node 30 are communicatively connected. The service base station in the service base station node 20 and the service terminal in the service terminal node 30 can form a service network, and the service base station guard module in the service base station node 20 and the service terminal guard module in the service terminal node 30 can form a guard network.

[0073] The following describes in detail the specific working process of the communication system in the embodiments of the present invention during collaborative frequency switching.

[0074] The service base station guard module knows the operating frequencies of the cells deployed on the service base station through configuration or other means (hereinafter, without affecting understanding, it is also referred to as the service base station operating frequency or cell operating frequency).

[0075] First, the network initial startup process.

[0076] 1) After the service base station node starts up.

[0077] a) The clock unit of the service base station guard module provides a time synchronization signal for the service base station; b) After the service base station starts up, normal transceiver processing is performed according to the provisions of the protocol stack. The operating frequency of the service base station is determined by configuration, and unless reconfigured, the operating frequency of the service base station does not change; c) The service base station guard module selects a frequency with low air interface interference and idle as the actual air interface frequency of the service base station node through the spectrum sensing unit. The intelligent control unit calculates and configures the local oscillator of the auxiliary frequency switching unit according to the selected air interface frequency and the operating frequency of the service base station (local oscillator frequency = air interface frequency + operating frequency or local oscillator frequency = Abs(air interface frequency - operating frequency), where Abs represents taking the absolute value). After that, the air interface frequency of the service base station node is locked on the selected air interface frequency; 2) The communication unit of the service base station guard module periodically sends a "working frequency indication instruction" currently actually used by the service base station node on the air interface, which is used to indicate the air interface frequency that the service terminal node should lock. The instruction at least includes: message sequence number, service base station ID, working cell ID, cell operating frequency (corresponding to the operating frequency configured by the service base station), cell air interface frequency (corresponding to the air interface frequency of the service base station node), transmit power and other parameters.

[0078] 3) After the service terminal node is powered on or enters the cell coverage area, the service terminal guard module (communication unit) will first establish a communication link with the service base station guard module (communication unit) (that is, first establish a guard network).

[0079] 4) Based on the signal quality of different service base station guard modules received by the communication unit and the "working frequency indication instruction", the service terminal guard module (intelligent control unit) selects the optimal working cell (such as the cell with the best received signal quality) for air interface frequency locking; 5) According to the cell working frequency and cell air interface frequency of the selected working cell, the intelligent control unit of the service terminal guard module can calculate and set the local oscillator frequency of the auxiliary frequency switching unit, and directly lock the air interface frequency to the "cell air interface frequency" specified by the "working frequency indication instruction". This process does not involve the protocol stack processing of the cellular network, that is, the working frequency determined by the service terminal protocol stack can be different from the actual air interface working frequency of the service terminal node.

[0080] 6) When the service base station operates in the TDD mode, the service terminal guard module (intelligent control unit) controls the auxiliary frequency switching unit to switch the transceiver state according to the rhythm of the service base station; when the service base station operates in the FDD mode, the service terminal guard module (intelligent control unit) only controls the auxiliary frequency switching unit to switch the frequency and does not switch the transceiver state.

[0081] 7) The protocol stack of the service terminal performs terminal network access operations according to the received air interface information. The protocol stack behavior of the service terminal will only change the working frequency of the service terminal itself and does not involve the change of the air interface frequency of the service terminal node.

[0082] Secondly, the service network coordinated frequency switching process.

[0083] The service network coordinated frequency switching is initiated by the service base station, and the specific process is as follows: 1) When the service base station guard module senses that the current "cell working frequency" is interfered through its own spectrum sensing unit or the service base station guard module receives that the current "cell working frequency" is interfered from other service terminal guard modules, based on its own air interface spectrum sensing results combined with the spectrum sensing report results of other service terminal guard modules, it selects a frequency with less interference and lower reuse degree as the "cell target air interface frequency".

[0084] 2) The service base station guard module sends a "frequency switching control instruction" through the air interface. The instruction at least includes: message sequence number, service base station ID, working cell ID, cell working frequency (corresponding to the working frequency configured by the service base station), cell air interface frequency (corresponding to the air interface frequency of the service base station node), cell target air interface frequency (corresponding to the target air interface frequency of the service base station node), transmit power, parameter effective time and other parameters; 3) After the service terminal guard module receives the "frequency switching control instruction" of the service base station through the air interface, it first performs ID verification: 3a) If the service base station ID + working cell ID of the cell selected by the current service terminal guard module is inconsistent with the ID in the "frequency handover control instruction", then discard the frequency handover control instruction; 3b) If the service base station ID + working cell ID of the cell selected by the current service terminal guard module is consistent with the cell ID in the "frequency handover control instruction" (i.e., the current service terminal is camped on this cell), then: 3b1) If the current effective time has arrived or expired, the intelligent control unit of the service terminal guard module controls the auxiliary frequency handover unit to immediately switch the target air interface frequency of the current cell (change the local oscillator frequency); 3b2) If the current effective time has not arrived, the service terminal guard module saves the message parameters, and then processes them according to 3b1) after the effective time arrives; 4) When the service terminal guard module receives a new frequency handover control instruction before the previous received "frequency handover control instruction" has reached the effective time, and the new "frequency handover control instruction" passes the cell ID and other validations, the service terminal guard module will stop the behavior of the previous frequency handover control instruction, and then perform subsequent processing according to 3b); 5) The service terminal guard module switches the air interface frequency of the cell without the need for the cellular network protocol stack to process, that is, the air interface frequency of the service terminal node has changed, but the working frequency considered by the cellular network protocol stack remains unchanged.

[0085] In addition, it should be noted that the communication system may further include an independent guard module, and the independent guard module includes the collaborative frequency handover control device described above. The independent guard module can jointly form a guard network with the service base station guard module and the service terminal guard module. After the service base station and the service terminal are attacked, the independent guard module can still play a communication backup role based on the guard network formed by it.

[0086] In summary, for the communication system provided by the present invention, since both its service base station node and service terminal node include the collaborative frequency handover control device described above, it can realize the rapid identification of interference in a fixed-frequency network such as a cellular network, and perform targeted network-level frequency synchronization handover to avoid interference in real time, greatly improving the anti-interference ability of the entire network.

[0087] It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principle of the present invention, and the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. A collaborative frequency switching control device, characterized in that, Including: An auxiliary frequency switching unit, a communication unit, a spectrum sensing unit, an intelligent control unit, and a clock unit. The auxiliary frequency switching unit, the communication unit, the spectrum sensing unit, and the clock unit are all communicatively connected to the intelligent control unit. The clock unit and the auxiliary frequency switching unit are both communicatively connected to the communication unit; The intelligent control unit is configured to control the spectrum sensing unit to sense the air interface frequency, control the communication unit to share its own air interface candidate frequency status with the guard network, and control the auxiliary frequency switching unit to perform bidirectional transformation between the operating frequency and the air interface frequency. The guard network is a communication network formed among multiple cooperative frequency switching control devices; The communication unit establishes a communication connection with the guard network through the guard air interface, is used to maintain the network-level time synchronization relationship of the guard network, and is used to transmit the frequency switching instruction in the guard network; The auxiliary frequency switching unit is connected to an external device through a service radio frequency interface, and is used to assist the external device in performing bidirectional transformation between the operating frequency and the air interface frequency under the control of the intelligent control unit. The external device includes a service base station or a service terminal; The clock unit is connected to the external device through a timing interface, and is used to provide a timing signal for synchronization timing to the external device; The spectrum sensing unit is used to sense the air interface candidate frequency status of the service network under the control of the intelligent control unit, and share the sensing result through the guard interface.

2. The collaborative frequency switching control device according to claim 1, characterized in that The auxiliary frequency switching unit at least includes: a selection switch unit, a transmitting frequency conversion unit, and a receiving frequency conversion unit. The transmitting frequency conversion unit and the receiving frequency conversion unit are both connected to the selection switch unit. The selection switch unit, the transmitting frequency conversion unit, and the receiving frequency conversion unit are all connected to the intelligent control unit; The selection switch unit is connected to the service air interface, and can select the transmitting channel of the transmitting frequency conversion unit and the receiving channel of the receiving frequency conversion unit under the control of the intelligent control unit. The transmitting channel of the transmitting frequency conversion unit at least includes a transmitting direct-through channel and a transmitting frequency conversion channel. The receiving channel of the receiving frequency conversion unit at least includes a receiving direct-through channel and a receiving frequency conversion channel; The transmitting frequency conversion unit is used to directly transmit the operating frequency input from the service radio frequency interface to the service air interface when the intelligent control unit selects the transmitting direct-through channel, and is used to perform frequency conversion on the operating frequency input from the service radio frequency interface and then output it to the service air interface when the intelligent control unit selects the transmitting frequency conversion channel; The receiving frequency conversion unit is used to directly transmit the air interface frequency input from the service air interface to the service radio frequency interface when the intelligent control unit selects the receiving direct-through channel, and is used to perform frequency conversion on the air interface frequency input from the service air interface and then output it to the service radio frequency interface when the intelligent control unit selects the receiving frequency conversion channel.

3. The cooperative frequency switching control device according to claim 2, wherein The selection switch unit includes a first data selection switch and a second data selection switch. The transmission frequency conversion unit includes a first mixer, a first hopping filter, a first amplifier, and a first local oscillator. The first input end of the first mixer is connected to the first end of the first data selection switch. The second input end of the first mixer is connected to the first local oscillator. The output end of the first mixer is connected to the input end of the first hopping filter. The output end of the first hopping filter is connected to the input end of the first amplifier. The output end of the first amplifier is connected to the first end of the second data selection switch; The first mixer can mix the operating frequency input from the service radio frequency interface through the first end of the first data selection switch with the first local oscillator frequency of the first local oscillator to obtain the air interface frequency to be transmitted. The first hopping filter can filter the air interface frequency to be transmitted after mixing. The first amplifier can amplify the air interface frequency to be transmitted after the filtering process and output it to the service air interface through the first end of the second data selection switch. The service air interface can transmit the amplified air interface frequency to be transmitted; When the first end of the first data selection switch and the first end of the second data selection switch are simultaneously selected by the intelligent control unit, a transmission frequency conversion channel of the transmission frequency conversion unit is formed. The second end of the first data selection switch is directly connected to the second end of the second data selection switch. When the second end of the first data selection switch and the second end of the second data selection switch are simultaneously selected by the intelligent control unit, a transmission direct-through channel of the transmission frequency conversion unit is formed; The reception frequency conversion unit includes a second hopping filter, a second amplifier, a second mixer, and an intermediate frequency filter. The input end of the second hopping filter is connected to the third end of the second data selection switch. The output end of the second hopping filter is connected to the input end of the second amplifier. The output end of the second amplifier is connected to the first input end of the second mixer. The second input end of the second mixer is connected to the first local oscillator. The output end of the second mixer is connected to the input end of the intermediate frequency filter. The output end of the intermediate frequency filter is connected to the third end of the first data selection switch; The second hopping filter can filter the received air interface frequency input from the service air interface through the third end of the second data selection switch. The second amplifier can amplify the received air interface frequency after the filtering process. The second mixer can mix the amplified received air interface frequency with the second local oscillator frequency of the first local oscillator to obtain the operating frequency to be received. The operating frequency to be received is output to the service radio frequency interface through the third end of the first data selection switch. The service radio frequency interface can transmit the operating frequency to be received; When the third terminal of the first data selection switch and the third terminal of the second data selection switch are simultaneously selected and enabled by the intelligent control unit, a reception frequency conversion channel of the reception frequency conversion unit is formed; the fourth terminal of the first data selection switch is directly connected to the fourth terminal of the second data selection switch, and when the fourth terminal of the first data selection switch and the fourth terminal of the second data selection switch are simultaneously selected and enabled by the intelligent control unit, a reception direct-through channel of the reception frequency conversion unit is formed.

4. The collaborative frequency switching control device according to claim 2, wherein The auxiliary frequency switching unit further includes a first duplexer and a second duplexer. The first duplexer is disposed at one end close to the service radio frequency interface and is connected to the service radio frequency interface. The second duplexer is disposed at one end close to the service air interface and is connected to the service air interface. The first duplexer can output the operating frequency input from the service radio frequency interface to the transmission frequency conversion unit, and can output the air interface frequency output from the reception frequency conversion unit to the service radio frequency interface. The second duplexer can output the air interface frequency output from the transmission frequency conversion unit to the service air interface, and can output the air interface frequency input from the service air interface to the reception frequency conversion unit. The selection switch unit includes a first data selection switch, a second data selection switch, a third data selection switch, and a fourth data selection switch. The first data selection switch and the second data selection switch are both connected to the first duplexer. The third data selection switch and the fourth data selection switch are both connected to the second duplexer. The transmission frequency conversion unit includes a first mixer, a first frequency hopping filter, a first amplifier, and a first local oscillator. The first input terminal of the first mixer is connected to the first terminal of the first data selection switch. The second input terminal of the first mixer is connected to the first local oscillator. The output terminal of the first mixer is connected to the input terminal of the first frequency hopping filter. The output terminal of the first frequency hopping filter is connected to the input terminal of the first amplifier. The output terminal of the first amplifier is connected to the first terminal of the third data selection switch. The first mixer can mix the operating frequency input from the service radio frequency interface through the first duplexer and the first terminal of the first data selection switch with the local oscillator frequency of the first local oscillator to obtain the air interface frequency to be transmitted. The first frequency hopping filter can filter the air interface frequency to be transmitted after mixing. The first amplifier can amplify the filtered air interface frequency to be transmitted and output it to the service air interface through the first terminal of the third data selection switch and the second duplexer. The service air interface can transmit the amplified air interface frequency to be transmitted. When the first ends of the first data selection switch and the third data selection switch are simultaneously selected and enabled by the intelligent control unit, a transmission frequency conversion channel of the transmission frequency conversion unit passing through the first duplexer and the second duplexer is formed; the second ends of the first data selection switch and the third data selection switch are directly connected, and when the second ends of the first data selection switch and the third data selection switch are simultaneously selected and enabled by the intelligent control unit, a transmission direct-through channel of the transmission frequency conversion unit passing through the first duplexer and the second duplexer is formed. The receiving frequency conversion unit includes a second hopping filter, a second amplifier, a second mixer, an intermediate frequency filter, and a second local oscillator. The input end of the second hopping filter is connected to the first end of the fourth data selection switch, the output end of the second hopping filter is connected to the input end of the second amplifier, the output end of the second amplifier is connected to the first input end of the second mixer, the second input end of the second mixer is connected to the second local oscillator, the output end of the second mixer is connected to the input end of the intermediate frequency filter, and the output end of the intermediate frequency filter is connected to the first end of the second data selection switch. The second hopping filter can perform filtering processing on the received air interface frequency input from the service air interface through the second duplexer and the first end of the fourth data selection switch. The second amplifier can perform amplification processing on the filtered received air interface frequency. The second mixer can mix the amplified received air interface frequency with the local oscillator frequency of the second local oscillator to obtain the received operating frequency to be received. The intermediate frequency filter can perform intermediate frequency filtering on the received operating frequency to be received. The received operating frequency after intermediate frequency filtering is output to the service radio frequency interface through the first end of the second data selection switch and the first duplexer, and the service radio frequency interface can send out the received operating frequency to be received. When the first ends of the third data selection switch and the fourth data selection switch are simultaneously selected and enabled by the intelligent control unit, a receiving frequency conversion channel of the receiving frequency conversion unit passing through the first duplexer and the second duplexer is formed; the second ends of the third data selection switch and the fourth data selection switch are directly connected, and when the second ends of the third data selection switch and the fourth data selection switch are simultaneously selected and enabled by the intelligent control unit, a receiving direct-through channel of the receiving frequency conversion unit passing through the first duplexer and the second duplexer is formed.

5. The collaborative frequency switching control device according to claim 2, characterized in that, The auxiliary frequency switching unit further includes a first duplexer and a second duplexer. The first duplexer is arranged at one end close to the service radio frequency interface and is connected to the service radio frequency interface. The second duplexer is arranged at one end close to the service air interface and is connected to the service air interface. The first duplexer can output the operating frequency input from the service radio frequency interface to the transmission frequency conversion unit, and can output the air interface frequency output from the receiving frequency conversion unit to the service radio frequency interface. The second duplexer can output the air interface frequency output by the transmitting frequency conversion unit to the service air interface, and can output the air interface frequency input by the service air interface to the receiving frequency conversion unit; The selection switch unit includes a first data selection switch, a second data selection switch, a third data selection switch, a fourth data selection switch, a fifth data selection switch, a sixth data selection switch, and a seventh data selection switch. The first data selection switch and the second data selection switch are both connected to the first duplexer. The third data selection switch and the fourth data selection switch are both connected to the second duplexer. The input and output terminals of the fifth data selection switch are connected to the service radio frequency interface. The first gating terminal of the fifth data selection switch is connected to the first duplexer. The second gating terminal of the fifth data selection switch is connected to the first data selection switch. The third gating terminal of the fifth data selection switch is connected to the second data selection switch. The input and output terminals of the sixth data selection switch are connected to the service air interface. The first gating terminal of the sixth data selection switch is connected to the second duplexer. The second gating terminal of the sixth data selection switch is connected to the third data selection switch. The third gating terminal of the sixth data selection switch is connected to the fourth data selection switch; The transmitting frequency conversion unit includes a first mixer, a first hopping filter, a first amplifier, and a first local oscillator. The first input terminal of the first mixer is connected to the first end of the first data selection switch. The second input terminal of the first mixer is connected to the first local oscillator. The first local oscillator is also connected to the first gating terminal of the seventh data selection switch. The output terminal of the first mixer is connected to the input terminal of the first hopping filter. The output terminal of the first hopping filter is connected to the input terminal of the first amplifier. The output terminal of the first amplifier is connected to the first end of the third data selection switch; The first mixer can mix the operating frequency input by the service radio frequency interface at least through the first end of the first data selection switch with the local oscillator frequency of the first local oscillator to obtain the air interface frequency to be transmitted. The first hopping filter can perform filtering processing on the air interface frequency to be transmitted after mixing. The first amplifier can amplify the air interface frequency to be transmitted after the filtering processing and output it to the service air interface at least through the first end of the third data selection switch. The service air interface can send out the air interface frequency to be transmitted after the amplification processing; When the second gating terminals of the fifth data selection switch, the second gating terminals of the sixth data selection switch, and the first gating terminal of the seventh data selection switch are simultaneously gated by the intelligent control unit, when the first terminals of the first data selection switch and the third data selection switch are simultaneously gated by the intelligent control unit, a transmission frequency conversion channel of the transmission frequency conversion unit is formed; the second terminals of the first data selection switch and the third data selection switch are directly connected, and when the second terminals of the first data selection switch and the third data selection switch are simultaneously gated by the intelligent control unit, a transmission direct-through channel of the transmission frequency conversion unit is formed; When the first gating terminals of the fifth data selection switch, the first gating terminals of the sixth data selection switch, and the first and second gating terminals of the seventh data selection switch are simultaneously gated by the intelligent control unit, when the first terminals of the first data selection switch and the third data selection switch are simultaneously gated by the intelligent control unit, a transmission frequency conversion channel of the transmission frequency conversion unit passing through the first duplexer and the second duplexer is formed; the second terminals of the first data selection switch and the third data selection switch are directly connected, and when the second terminals of the first data selection switch and the third data selection switch are simultaneously gated by the intelligent control unit, a transmission direct-through channel of the transmission frequency conversion unit passing through the first duplexer and the second duplexer is formed; The receiving frequency conversion unit includes a second hopping filter, a second amplifier, a second mixer, an intermediate frequency filter, and a second local oscillator. The input end of the second hopping filter is connected to the first terminal of the fourth data selection switch. The output end of the second hopping filter is connected to the input end of the second amplifier. The output end of the second amplifier is connected to the first input end of the second mixer. The second input end of the second mixer is connected to the second local oscillator. The second local oscillator is also connected to the second gating terminal of the seventh data selection switch. The output end of the second mixer is connected to the input end of the intermediate frequency filter. The output end of the intermediate frequency filter is connected to the first terminal of the second data selection switch; The second hopping filter can filter the receiving air interface frequency input at least through the first terminal of the fourth data selection switch of the service air interface. The second amplifier can amplify the filtered receiving air interface frequency. The second mixer can mix the amplified receiving air interface frequency with the local oscillator frequency of the second local oscillator to obtain the receiving operating frequency to be received. The intermediate frequency filter can perform intermediate frequency filtering on the receiving operating frequency to be received. The receiving operating frequency after intermediate frequency filtering is output at least through the first terminal of the second data selection switch to the service radio frequency interface, and the service radio frequency interface can emit the receiving operating frequency; When the third gating terminal of the fifth data selection switch, the third gating terminal of the sixth data selection switch, and the first gating terminal of the seventh data selection switch are simultaneously gated by the intelligent control unit, when the first terminal of the third data selection switch and the first terminal of the fourth data selection switch are simultaneously gated by the intelligent control unit, a reception frequency conversion channel of the reception frequency conversion unit is formed; the second terminal of the third data selection switch is directly connected to the second terminal of the fourth data selection switch, and when the second terminal of the third data selection switch and the second terminal of the fourth data selection switch are simultaneously gated by the intelligent control unit, a reception direct-through channel of the reception frequency conversion unit is formed. When the first gating terminal of the fifth data selection switch, the first gating terminal of the sixth data selection switch, and the first gating terminal and the second gating terminal of the seventh data selection switch are simultaneously gated by the intelligent control unit, when the first terminal of the third data selection switch and the first terminal of the fourth data selection switch are simultaneously gated by the intelligent control unit, a reception frequency conversion channel of the reception frequency conversion unit passing through the first duplexer and the second duplexer is formed; the second terminal of the third data selection switch is directly connected to the second terminal of the fourth data selection switch, and when the second terminal of the third data selection switch and the second terminal of the fourth data selection switch are simultaneously gated by the intelligent control unit, a reception direct-through channel of the reception frequency conversion unit passing through the first duplexer and the second duplexer is formed.

6. The collaborative frequency switching control device according to claim 2, wherein, The auxiliary frequency switching unit further includes: a signal conditioning unit, which is connected to the service radio frequency interface and is used to adjust the signal magnitude of the operating frequency input by the external device through the service radio frequency interface and to adjust the signal magnitude of the operating frequency output to the external device through the service radio frequency interface.

7. The collaborative frequency switching control device according to claim 1, wherein The intelligent control unit is used to control the auxiliary frequency switching unit to perform bidirectional conversion between the operating frequency and the air interface frequency, including: When the auxiliary frequency switching unit is used to convert the operating frequency of the external device into the air interface frequency, the intelligent control unit is used to determine the local oscillator frequency of the auxiliary frequency switching unit according to the operating frequency of the external device and the current air interface frequency, and configure the local oscillator of the auxiliary frequency switching unit according to the local oscillator frequency. When the auxiliary frequency switching unit is used to convert the received air interface frequency into the operating frequency of the external device, the intelligent control unit is used to determine the local oscillator frequency of the auxiliary frequency switching unit according to the air interface frequency and the current operating frequency of the external device, and configure the local oscillator of the auxiliary frequency switching unit according to the local oscillator frequency.

8. A service base station node, characterized in that, It includes a service base station and a service base station guard module, the service base station guard module is communicatively connected to the service base station, and the service base station guard module includes the cooperative frequency switching control device according to any one of claims 1 to 7.

9. A service terminal node, characterized in that, It includes a service terminal and a service terminal protection module. The service terminal protection module is communicatively connected to the service terminal, and the service terminal protection module includes the cooperative frequency switching control device according to any one of claims 1 to 7.

10. A communication system, characterized in that, It includes the service base station node according to claim 8 and the service terminal node according to claim 9. The service base station node and the service terminal node are communicatively connected. The service base station in the service base station node and the service terminal in the service terminal node can form a service network, and the service base station protection module in the service base station node and the service terminal protection module in the service terminal node can form a protection network.

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