Network convergence communication system and communication method

Abstract

The invention relates to the technical field of mobile communication, and particularly discloses a network convergence communication system and method, and the system comprises a service base station node and a service terminal node. The service base station node comprises a service base station and a service base station guard module in communication connection with the service base station, the service base station can perform wireless access service, and the service base station guard module provides a time service signal for synchronous timing for the service base station; sensing the air interface frequency spectrum state change of the service base station node in real time and controlling the air interface frequency switching of the service base station node; the service terminal node comprises a service terminal and a service terminal guard module in communication connection with the service terminal, the service terminal accesses the service base station through a wireless access service, and the service terminal guard module senses the air interface frequency spectrum state change of the service terminal node in real time and controls the air interface frequency switching of the service terminal node. According to the network convergence communication system provided by the invention, the anti-interference capability of the commercial cellular network when being applied in the specific field can be improved.

Description

Technical Field

[0001] The present invention relates to the field of mobile communication technologies, and in particular, to a network convergence communication system and a communication method. Background Art

[0002] Commercial cellular network technologies have various excellent characteristics such as large bandwidth, low latency, and ultra-large-scale networking, significantly changing people's lifestyles and promoting rapid social progress. At the network architecture level, through the base station as the central node, cellular network technologies can conveniently and quickly connect each terminal node scattered within the coverage area of the base station to the network in a wireless manner and provide efficient broadband communication services for them. Therefore, such networks can also be collectively referred to as cellular networks, and will be uniformly referred to as cellular networks hereinafter.

[0003] In commercial scenarios, each country has pre-planned specific working frequency bands for cellular networks, which are exclusively occupied (such as through spectrum auctions) or shared by different operators. Therefore, in the actual network deployment and use process, cellular networks do not need to consider the impact of illegal problems such as malicious interference and attacks on the network. However, if cellular networks are applied to special fields, when the central node (base station) encounters interference or attack, it may cause communication degradation or interruption of all terminals within the coverage area of the base station.

[0004] Therefore, how to improve the anti-interference and anti-attack capabilities of commercial cellular networks when applied to specific fields has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0005] The present invention provides a network convergence communication system and a communication method, which solve the problem that commercial cellular networks are vulnerable to interference or attack and cause communication degradation or interruption when applied to specific fields in the related art.

[0006] As a first aspect of the present invention, there is provided a network convergence communication system, which includes: A service base station node and a service terminal node, where the service base station node and the service terminal node are communicatively connected; The service base station node includes a service base station and a service base station guard module communicatively connected to the service base station. The service base station can provide wireless access services, and the service base station guard module can provide a timing signal for synchronization timing to the service base station, and can also sense the change of the air interface spectrum state of the service base station node in real time and control the air interface frequency switching of the service base station node; The service terminal node includes a service terminal and a service terminal protection module communicatively connected to the service terminal. The service terminal can access the service base station through a wireless access service. The service terminal protection module can sense the change of the air interface spectrum state of the service terminal node in real time and control the air interface frequency switching of the service terminal node. The service terminal and the service base station can form a service network. The service base station protection module and the service terminal protection module can form a protection network. The service base station protection module and the service terminal protection module can share the change of the air interface spectrum state sensed by each through the protection network.

[0007] Further, the service base station protection module at least includes: a first auxiliary frequency switching unit, a first communication unit, a first spectrum sensing unit, a first intelligent control unit, and a first clock unit. The first auxiliary frequency switching unit, the first communication unit, the first spectrum sensing unit, and the first clock unit are all communicatively connected to the first intelligent control unit. The first clock unit and the first auxiliary frequency switching unit are both communicatively connected to the first communication unit. The first intelligent control unit is used to control the first spectrum sensing unit to obtain the change of the air interface spectrum state of the service base station node, control the first communication unit to share the change of the air interface spectrum state of the service base station node with the protection network, and control the first auxiliary spectrum switching unit to perform the air interface frequency switching of the service base station node. The first communication unit is used to establish a communication connection with the protection network through the protection air interface. The first auxiliary spectrum switching unit is connected to the service base station through a service radio frequency interface and is used to transform the working frequency of the service base station into the air interface frequency of the service base station node and transform the air interface frequency of the service base station node into the working frequency of the service base station under the control of the first intelligent control unit, and can perform the air interface frequency switching of the service base station node. The first clock unit is connected to the service base station through a timing interface and is used to provide a timing signal for synchronization timing to the service base station. The first spectrum sensing unit is used to sense the change of the air interface spectrum of the service base station node under the control of the first intelligent control unit and share the sensing result through the protection air interface.

[0008] Further, the service terminal protection module at least includes: a second auxiliary frequency switching unit, a second communication unit, a second spectrum sensing unit, a second intelligent control unit, and a second clock unit. The second auxiliary frequency switching unit, the second communication unit, the second spectrum sensing unit, and the second clock unit are all communicatively connected to the second intelligent control unit. The second clock unit and the second auxiliary frequency switching unit are both communicatively connected to the second communication unit; The second intelligent control unit is configured to control the second spectrum sensing unit to obtain the change in the air interface spectrum state of the service terminal node, control the second communication unit to share the change in the air interface spectrum state of the service terminal node with the protection network, and control the second auxiliary spectrum switching unit to perform air interface frequency switching of the service terminal node; The second communication unit is configured to establish a communication connection with the protection network through the protection air interface; The second auxiliary spectrum switching unit is connected to the service terminal through a service radio frequency interface, and is configured to convert the operating frequency of the service terminal into the air interface frequency of the service terminal node and convert the air interface frequency of the service terminal node into the operating frequency of the service terminal under the control of the second intelligent control unit, and is capable of performing air interface frequency switching of the service terminal node; The second clock unit realizes time synchronization with the protection network through the second communication unit; The second spectrum sensing unit is configured to sense the change in the air interface spectrum of the service terminal node under the control of the second intelligent control unit and share the sensing result through the protection air interface.

[0009] Further, it further includes: an analog base station node and an analog terminal node. The analog base station node is communicatively connected to the service base station node, and the analog terminal node is communicatively connected to the service terminal node, The analog base station node is configured to simulate the behavior of the service base station node, and the analog terminal node is configured to simulate the behavior of the service terminal node.

[0010] Further, the analog base station node includes an analog base station and an analog base station protection module. The analog base station protection module is communicatively connected to the analog base station. The analog base station is configured to at least simulate the air interface behavior of the service base station, and the analog base station protection module is configured to at least implement the frequency switching control behavior of the service base station protection module; The analog terminal node includes an analog terminal and an analog terminal protection module. The analog terminal protection module is communicatively connected to the analog terminal. The analog terminal is configured to at least simulate the air interface behavior of the service terminal, and the analog terminal protection module is configured to at least implement the frequency switching control behavior of the service terminal protection module.

[0011] Further, the simulated base station node includes a simulated base station guard module, and the simulated base station guard module is used to at least implement the frequency switching control behavior of the service base station guard module. The communication unit in the simulated base station guard module is also used to simulate the air interface behavior of the service base station; The simulated terminal node includes a simulated terminal guard module, and the simulated terminal guard module is used to at least implement the frequency switching control behavior of the service terminal guard module. The communication unit in the simulated terminal guard module is also used to simulate the air interface behavior of the service terminal.

[0012] Further, it further includes: a guard node, including an independent guard module, connected to the guard network, and used to provide a service transmission path at least when the coverage range of the service network is smaller than that of the guard network.

[0013] Further, the service base station guard module and the service terminal guard module can cooperate with each other to determine the frequency switching moment of the service base station node and / or the service terminal node, where the frequency switching moment at least includes a radio frame boundary, a radio sub-frame boundary, a time slot boundary, a transmit-receive protection band, and a receive-transmit protection band.

[0014] As another aspect of the present invention, there is provided a communication method applied to the network convergence communication system described above, where it includes: The service base station guard module in the service base station node at least spreads the air interface frequency currently used by the service base station node, and the service base station guard module is communicatively connected to the service communication in the service base station node; When the service base station guard module determines that the service network is interfered, the service base station guard module controls the air interface frequency of the service base station node to switch, and the service terminal guard module controls the air interface frequency of the service terminal node to switch; When the service terminal guard module in the service terminal node receives that the air interface frequency of the service base station node spread by the service base station guard module is different from the air interface frequency currently used by the service terminal in the service terminal node, it controls the air interface frequency of the service terminal node to switch so that the air interface frequency of the service terminal node is consistent with the air interface frequency of the service base station node; The service terminal and the service base station can form a service network; The service base station guard module and the service terminal guard module can form a guard network, and the service base station guard module and the service terminal guard module can share the changes in the air interface spectrum status they sense through the guard network.

[0015] Further, when the service base station protection module determines that the service network is interfered, the service base station protection module controls the radio frequency of the service base station node to switch, and the service terminal protection module controls the radio frequency of the service terminal node to switch, including: When the service base station protection module determines that the service network is interfered, the service base station protection module and the service terminal protection module negotiate through the protection network according to the current changes in the radio frequency spectrum status sensed by each of them to determine the radio frequency and the switching time to which the service network is to switch; When the negotiation between the service base station protection module and the service terminal protection module is successful, the service base station protection module controls the service base station node to switch to the negotiated radio frequency at the negotiated switching time, and the service terminal protection module controls the service terminal node to switch to the negotiated radio frequency at the negotiated switching time.

[0016] In the network convergence communication system provided by the present invention, a service base station protection module is set in the service base station node, and a service terminal protection module is set in the service terminal node. The service base station protection module can realize the sensing of the radio frequency spectrum situation of the service base station node, and the service terminal protection module can realize the sensing of the radio frequency spectrum situation of the service terminal node. Therefore, when the radio frequency spectrum situation changes are sensed, it can assist the service base station and the service terminal to achieve dynamic collaborative frequency switching, so as to avoid interference. Therefore, this communication system that integrates the service network and the protection network of the present invention can resist interference and attacks when used in special fields, and has the advantage of strong survivability. Description of the Drawings

[0017] 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.

[0018] Figure 1 It is a structural block diagram of the network convergence communication system provided by the present invention.

[0019] Figure 2 It is a structural block diagram of the service base station protection module provided by the present invention.

[0020] Figure 3 It is a structural block diagram of the service terminal protection module provided by the present invention.

[0021] Figure 4 It is a structural block diagram of the specific embodiment of the network convergence communication system provided by the present invention.

[0022] Figure 5 It is a schematic diagram of the network architecture of the network convergence communication system provided by the present invention.

[0023] Figure 6 Flow chart of the communication method provided by the present invention.

[0024] Figure 7 Schematic diagram of the architecture of the single base station network provided by the present invention.

[0025] Figure 8a Schematic diagram of the structure of the service base station guard module of the single base station network provided by the present invention.

[0026] Figure 8b Schematic diagram of the structure of the service terminal guard module of the single base station network provided by the present invention.

[0027] Figure 9 Schematic diagram of the architecture of the multi-base station network provided by the present invention. Detailed implementation manners

[0028] 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.

[0029] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] 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 necessarily need 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 "include" and "have" 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 necessarily 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.

[0031] In this embodiment, a network convergence communication system is provided. Figure 1 It is a block diagram of the network convergence communication system 10 provided according to the embodiment of the present invention, as Figure 1 shown, including: A service base station node 100 and a service terminal node 200, and the service base station node 100 and the service terminal node 200 are communicatively connected; The service base station node 100 includes a service base station 110 and a service base station guard module 120 communicatively connected to the service base station 110. The service base station 110 can provide wireless access services. The service base station guard module 120 can provide a timing signal for synchronization timing to the service base station 110, and can sense changes in the air interface spectrum state of the service base station node in real time and control the air interface frequency switching of the service base station node; The service terminal node 200 includes a service terminal 210 and a service terminal guard module 220 communicatively connected to the service terminal 210. The service terminal 210 can access the service base station 110 through wireless access services. The service terminal guard module 220 can sense changes in the air interface spectrum state of the service terminal node in real time and control the air interface frequency switching of the service terminal node; The service terminal 210 and the service base station 110 can form a service network; The service base station guard module 120 and the service terminal guard module 220 can form a guard network. The service base station guard module 120 and the service terminal guard module 220 can share the sensed air interface spectrum changes through the guard network.

[0032] In an embodiment of the present invention, the service network can specifically be represented as a wireless communication network composed of a service base station and a service terminal, mainly used for service bearing. For example, cellular networks such as 4G and 5G belong to the service network. Additionally, the service base station can be, for example, a 5G base station, and the service terminal can be, for example, a 5G terminal. In an embodiment of the present invention, the guard network is specifically mainly composed of guard modules, at least including a service base station guard module and a service terminal guard module.

[0033] Specifically, the service base station corresponds to the service base station in the service network (such as a 5G base station), providing wireless access services for the service terminal; the service base station guard module can provide a timing synchronization reference for the service base station, support air interface spectrum situation awareness, and implement dynamic frequency switching of the service base station to avoid interference.

[0034] The service terminal corresponds to the terminal unit in the service network (such as a 5G CPE (Customer Premise Equipment)). After the service terminal accesses the service base station wirelessly, it constructs a high-bandwidth and low-latency service network together with the service base station; the service terminal guard module supports air interface spectrum situation awareness and implements dynamic frequency switching of the service terminal to avoid interference.

[0035] It should be noted that in the embodiments of the present invention, the change in the air interface spectrum state may specifically include the change in the background noise and / or the change in interference. That is, the service base station guard module in the embodiments of the present invention can sense the change in the air interface spectrum state of the service base station node mainly by sensing the change in the background noise and / or the change in interference of the service base station node. Similarly, the service terminal guard module can sense the change in the air interface spectrum state of the service terminal node mainly by sensing the change in the background noise and / or the change in interference of the service terminal node.

[0036] Therefore, in the network convergence communication system provided by the embodiments of the present invention, a service base station guard module is set in the service base station node, and a service terminal guard module is set in the service terminal node. The service base station guard module can realize the perception of the air interface spectrum situation of the service base station node, and the service terminal guard module can realize the perception of the air interface spectrum situation of the service terminal node. Therefore, when the change in the air interface spectrum situation is sensed, it can assist the service base station and the service terminal to achieve dynamic cooperative frequency switching, so as to avoid interference. Therefore, this communication system that integrates the service network and the guard network of the present invention can resist interference and attacks when used in special fields, and has the advantage of strong survivability.

[0037] In the embodiments of the present invention, as Figure 2 shown, the service base station guard module 120 at least includes: a first auxiliary frequency switching unit 121, a first communication unit 122, a first spectrum sensing unit 123, a first intelligent control unit 124, and a first clock unit 125. The first auxiliary frequency switching unit 121, the first communication unit 122, the first spectrum sensing unit 123, and the first clock unit 125 are all communicatively connected to the first intelligent control unit 124. The first clock unit 125 and the first auxiliary frequency switching unit 121 are both communicatively connected to the first communication unit 122; The first intelligent control unit 124 is used to control the first spectrum sensing unit 123 to obtain the change in the air interface spectrum state of the service base station node, control the first communication unit 124 to share the change in the air interface spectrum state of the service base station node with the guard network, and control the first auxiliary spectrum switching unit 121 to perform the air interface frequency switching of the service base station node; The first communication unit 122 is used to establish a communication connection with the guard network through the guard air interface; The first auxiliary spectrum switching unit 121 is connected to the service base station through a service radio frequency interface, and is used to convert the operating frequency of the service base station into the air interface frequency of the service base station node and convert the air interface frequency of the service base station node into the operating frequency of the service base station under the control of the first intelligent control unit 124, and can perform the air interface frequency switching of the service base station node; The first clock unit 125 is connected to the service base station through a timing interface, and is used to provide a timing signal for synchronization timing to the service base station; The first spectrum sensing unit 123 is used to sense the change of the air interface spectrum of the service base station node under the control of the first intelligent control unit 124, and share the sensing result through the guard air interface.

[0038] It should be understood that in the embodiment of the present invention, the first auxiliary frequency switching unit 121 can not only realize the switching of the air interface frequency of the service base station node, that is, the air interface frequency of the service base station node can be switched from frequency point F1 to F2, etc., but also realize the bidirectional transformation between the operating frequency and the air interface frequency. Here, the bidirectional transformation can be understood as that it can not only transform the operating frequency of the service base station into the air interface frequency of the service base station node (that is, the air interface frequency of the service base station guard module), but also transform the received air interface frequency of the service base station node into the operating frequency of the service base station.

[0039] It should be noted that in the embodiment of the present invention, the operating frequency specifically represents the frequency currently used by 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 the operating frequency through the network access process specified by the protocol to access the cell. The air interface frequency specifically represents the frequency actually used by the service network air interface. The air interface frequency is specifically obtained by transforming the operating frequency through the corresponding guard module, that is, the guard module can transform the operating frequency into the air interface frequency in the transmission direction, and the guard module can transform the air interface frequency into the operating frequency in the reception direction.

[0040] In the embodiment of the present invention, the first intelligent control unit 124 obtains the air interface spectrum situation of the service base station guard module 120 itself through the spectrum sensing unit, shares and exchanges the spectrum situation between the guard modules through the first communication unit 122, forms a collaborative frequency usage strategy, and generates specific frequency point change times and specific used frequency point numbers based on this frequency usage strategy, and spreads them to the intelligent control units of other guard modules through the first communication unit 122, so as to realize the dynamic synchronous switching of the auxiliary frequency switching units of different guard modules in a collaborative manner, and finally realize the real-time change of the air interface frequency of the service network to achieve the purpose of avoiding interference.

[0041] As a specific implementation of the first clock unit 125, in the service base station guard module 120, it supports providing synchronous timing services for external devices through the timing interface; at the same time, the first clock unit also provides clock services for other functional units of the guard module. For example, the first clock unit 120 can provide clock services for the first auxiliary frequency switching unit 121, the first spectrum sensing unit 123, the first intelligent control unit 124, and the first communication unit 122. When there is an external synchronization signal input such as Beidou or GPS, the first clock unit can adjust the local clock based on the external synchronization signal; when there is no external synchronization signal input, the first clock unit can adjust the local clock according to the output of the first communication unit.

[0042] As a specific implementation of the first communication unit 122, it can interact with other guard modules to build a guard network, establish an interaction channel between guard modules, and maintain the time synchronization relationship between guard modules; the communication units of different guard modules can be independently networked and provide bearer services to the outside through the service interface, assisting in expanding the coverage of the service network and blind spot filling of the guard network. At the same time, when the service network is interrupted, it can also provide guaranteed communication.

[0043] As a specific implementation of the first auxiliary frequency switching unit 121, under the control of the first intelligent control unit, it assists the external device connected to the service radio frequency interface, that is, the service base station, to dynamically switch the operating frequency at a given moment.

[0044] Specifically, as Figure 3 shown, the service terminal guard module 220 at least includes: a second auxiliary frequency switching unit 221, a second communication unit 222, a second spectrum sensing unit 223, a second intelligent control unit 224, and a second clock unit 225. The second auxiliary frequency switching unit 221, the second communication unit 222, the second spectrum sensing unit 223, and the second clock unit 225 are all communicatively connected to the second intelligent control unit 224. The second clock unit 225 and the second auxiliary frequency switching unit 221 are both communicatively connected to the second communication unit 222; The second intelligent control unit 224 is used to control the second spectrum sensing unit 223 to obtain the change in the air interface spectrum status of the service terminal node, control the second communication unit 222 to share the change in the air interface spectrum status of the service terminal node with the guard network, and control the second auxiliary spectrum switching unit 221 to perform air interface frequency switching of the service terminal node; The second communication unit 222 is used to establish a communication connection with the guard network through the guard air interface; The second auxiliary spectrum switching unit 221 is connected to the service terminal through a service radio frequency interface, and is configured to convert the operating frequency of the service terminal into the air interface frequency of the service terminal node and convert the air interface frequency of the service terminal node into the operating frequency of the service terminal under the control of the second intelligent control unit 224, and is capable of performing air interface frequency switching of the service terminal node; The second clock unit 225 realizes time synchronization with the escort network through the second communication unit 222; The second spectrum sensing unit 223 is configured to sense the change of the air interface spectrum of the service terminal node under the control of the second intelligent control unit 224, and share the sensing result through the escort air interface.

[0045] It should be understood that in the embodiment of the present invention, the second auxiliary spectrum switching unit can not only realize the switching of the air interface frequency, that is, the air interface frequency of the service terminal node can be switched from frequency point F1 to F2, etc., but also realize the bidirectional conversion between the operating frequency of the service terminal and the air interface frequency of the service terminal node. Here, the bidirectional conversion can be understood as that the operating frequency of the service terminal can be converted into the air interface frequency of the service terminal node (that is, the air interface frequency of the service terminal escort module), and the air interface frequency of the service terminal node can also be converted into the operating frequency of the service terminal.

[0046] In the embodiment of the present invention, the service terminal node is composed of a service terminal and a service terminal escort module. The service terminal is interconnected with the service radio frequency interface of the service terminal escort module through a radio frequency interface. Its transmitted signal is frequency-converted by the second auxiliary frequency switching unit and then sent out at the air interface; the signal received at the air interface is frequency-converted by the second auxiliary frequency switching unit and then sent to the radio frequency interface of the service terminal through the service radio frequency interface. The whole process is transparent to the service terminal.

[0047] It should be understood that the second auxiliary spectrum switching unit 221 in the service terminal escort module 220 is configured to assist the external device connected to the service radio frequency interface, that is, the service terminal, to dynamically switch the operating frequency at a given moment under the control of the second intelligent control unit.

[0048] It should be noted that in the embodiment of the present invention, since the time synchronization of the service terminal follows the service base station, the second clock unit 125 does not need to provide timing to the service terminal, and it only needs to realize time synchronization with the service base station through the escort network.

[0049] In addition, in the embodiment of the present invention, the service terminal escort module can provide service interfaces for external devices or applications to use. When the external device or application finds that the communication provided by the service terminal is interrupted, it can independently decide whether to switch to the escort network for service transmission.

[0050] As a further embodiment of the present invention, in order to reduce the probability that the service base station is subject to local interference and attacks, as Figure 4 shown, the network fusion communication system further includes: an analog base station node 300 and an analog terminal node 400. The analog base station node 300 is communicatively connected to the service base station node 100, and the analog terminal node 400 is communicatively connected to the service terminal node 200. The analog base station node 300 is used to simulate the behavior of the service base station node, and the analog terminal node 400 is used to simulate the behavior of the service terminal node.

[0051] In an embodiment of the present invention, the analog base station node 300 simulates the behavior of the service base station node to reduce the probability that the service base station is interfered with and attacked, and the analog terminal node 400 simulates the behavior of the service terminal to reduce the probability that the service terminal is interfered with and attacked.

[0052] As a specific embodiment of the analog base station node and the analog terminal node, specifically, the analog base station node 300 includes an analog base station 310 and an analog base station guard module 320. The analog base station guard module 320 is communicatively connected to the analog base station 310. The analog base station 310 is used to at least simulate the air interface behavior of the service base station 110, and the analog base station guard module 320 is used to at least implement the frequency switching control behavior of the service base station guard module 120. The analog terminal node 400 includes an analog terminal 410 and an analog terminal guard module 420. The analog terminal guard module 420 is communicatively connected to the analog terminal 410. The analog terminal 410 is used to at least simulate the air interface behavior of the service terminal 210, and the analog terminal guard module 420 is used to at least implement the frequency switching control behavior of the service terminal guard module 220.

[0053] It should be understood that in this embodiment, the analog base station node mainly includes an analog base station and an analog base station guard module. The analog base station is used to simulate the air interface behavior of the service base station. Under the collaborative control of the analog base station guard module, the probability that the service base station is subject to interference and attacks from the other party is reduced. The analog terminal node mainly includes an analog terminal and an analog terminal guard module. The analog terminal is used to simulate the air interface behavior of the service terminal. Under the collaborative control of the analog terminal guard module, the probability that the service terminal is subject to interference and attacks from the other party is reduced.

[0054] As another specific implementation manner of the analog base station node and the analog terminal node, specifically, the analog base station node 300 includes an analog base station guard module 320, and the analog base station guard module 320 is used to at least implement the frequency switching control behavior of the service base station guard module 120. The communication unit in the analog base station guard module 320 is further used to simulate the air interface behavior of the service base station 110; The analog terminal node 400 includes an analog terminal guard module 420, and the analog terminal guard module 420 is used to at least implement the frequency switching control behavior of the service terminal guard module 220. The communication unit in the analog terminal guard module 420 is further used to simulate the air interface behavior of the service terminal 210.

[0055] It should be understood that in this implementation manner, the communication unit in the analog base station node 300 is used to simulate the air interface behavior of the service base station 110, and the communication unit in the analog terminal node 400 is used to simulate the air interface behavior of the service terminal 210. Since the functions of the analog base station and the analog terminal can be replaced by the communication unit, the cost can be effectively reduced.

[0056] It should also be understood that in this implementation manner, in addition to completing its own communication function, the communication unit can also generate analog signals of the service base station and the service terminal as required, and send them to the auxiliary frequency switching unit for frequency conversion through the internal interface, and send them out through the air interface at a preset time.

[0057] In the embodiment of the present invention, as a further specific implementation manner of the first intelligent control unit, the first intelligent control unit can also perform cooperative control on the analog base station through the control interface, and control the communication unit to generate analog signals of the service base station, and implement the air interface behavior of the analog service base station at a specified frequency at a specified time through the first auxiliary frequency switching unit. Similarly, the second intelligent control unit can also perform cooperative control on the analog terminal through the control interface. In addition, the second intelligent control unit can also control the communication unit to generate analog signals of the service terminal, and implement the air interface behavior of the analog service terminal at a specified frequency at a specified time through the second auxiliary frequency switching unit.

[0058] As a further specific implementation manner of the present invention, in order to be able to implement blind spot filling and coverage extension of the guard network, as Figure 4 shown, the network convergence communication system further includes a guard node 500, including an independent guard module, connected to the guard network, and used to provide a service transmission path at least when the coverage range of the service network is smaller than the guard network.

[0059] It should be understood that the guard node 500 is composed of an independent guard module, that is, an independently deployed guard module, which can realize blind spot filling and coverage extension of the guard network.

[0060] The independently deployed guard module can also supplement the blind area of the guard network, that is, expand the coverage of the guard network.

[0061] It should be noted that the structural compositions of the simulation base station guard module and the independent guard module are the same as those of the service base station guard module and the service terminal guard module, and will not be elaborated here.

[0062] As Figure 5 shown, it is a schematic diagram of the network architecture of the network fusion communication system of the present invention. It can be seen from Figure 5 that the network of the network fusion communication system in the embodiment of the present invention is formed by the fusion of the service network and the guard network.

[0063] The following details the specific working process of the network fusion communication system.

[0064] During the operation of the network fusion communication system, it mainly involves the following scenarios, including fusion network establishment, service network interference avoidance, service base station / terminal signal simulation cover, network coverage extension, and guaranteed communication when the service network is interrupted, etc.

[0065] (1) Network establishment process 1) After the fusion network is powered on, each guard module independently constructs the guard network and completes the time synchronization of the entire guard network; 2) The service base station guard module provides a timing signal for synchronization timing to the service base station; 3) After the service base station obtains the timing signal and completes synchronization timing, it starts to work normally; 4) Each guard module (mainly the service base station guard module and the service terminal guard module) starts to sense the air interface spectrum situation of itself, and shares the sensing results among the guard modules through the guard network; 5) After the service base station guard module starts to work normally, it periodically spreads the currently used air interface frequency on the air interface to maintain the reliability of the system; 6) After the service terminal guard module starts to work normally, if it receives that the currently used air interface frequency sent by the service base station guard module to which it belongs is different from the air interface frequency it is using, it immediately changes the frequency through the auxiliary frequency switching unit to be consistent with the air interface frequency of the service base station guard module to which it belongs; otherwise, it takes no action.

[0066] Under the unified coordination of the service base station guard module and the service terminal guard module, the air interface transceiver frequencies of the service base station node and the service terminal node can be synchronized and changed.

[0067] (2) Interference avoidance process 1) Each guard module in the converged network (mainly the service base station guard module and the service terminal guard module) perceives the air interface spectrum situation in real time, identifies interference and available spectrum resources; 2) Each guard module shares the perception results of the air interface spectrum situation through the guard network; 3) Based on the collected air interface spectrum situation, the guard module generates the frequency point F1 that should be used by the service network and the effective time T1 of F1 through a certain cooperation strategy; 4) The guard module negotiates with other guard modules (mainly the service base station guard module and the service terminal guard module) through the guard network for the air interface frequency F1 to be switched and the effective time T1. If the negotiation is successful, each guard module (mainly the service base station guard module and the service terminal guard module) controls the auxiliary frequency switching unit to uniformly switch the air interface frequency to F1 at time T1; otherwise (if the negotiation is unsuccessful), the air interface frequency remains unchanged; Through the real-time spectrum situation perception of each guard module, the guard module can obtain the interference situation of the service network and the situation of idle and effective spectrum resources. Through the collaborative exchange of the guard network, real-time interference avoidance of the service network can be achieved.

[0068] (3) Base station / terminal cover process When simulated base station nodes or simulated terminal nodes are deployed in the network, the simulated base station guard module and the simulated terminal guard module will cooperate with the adjacent service base station guard module and service terminal guard module and accept the control of these service base station guard module and service terminal guard module.

[0069] 1) The simulated base station guard module and the simulated terminal guard module perceive the air interface spectrum situation in real time and identify available spectrum resources; It should be noted that the simulated base station guard module and the simulated terminal guard module mainly judge the air interface spectrum situation of each other through active judgment, that is, by periodically scanning frequencies, or by passive notification. Specifically, the spectrum situation perception method can be selected according to needs, and it is not limited here.

[0070] 2) The simulated base station guard module and the simulated terminal guard module share the perception results of their own air interface spectrum situation with other guard modules; 3) Based on the air interface spectrum situation reported by the simulated base station guard module, the obtained spectrum usage situation of the service network and the air interface spectrum situation of the service network, the adjacent service base station guard module generates information such as the signal emission pattern, used frequency point, effective time and duration of the simulated base station; 4) Based on the radio frequency spectrum situation of the air interface reported by the simulated terminal protection module, the spectrum usage of the service network, and the radio frequency spectrum situation of the air interface of the service network, the adjacent service terminal protection module generates information such as the signal emission pattern, frequency points used, effective time, and duration of the simulated terminal. 5) The service base station / terminal protection module forwards the information such as the signal emission pattern, frequency points used, effective time, and duration of the generated simulated base station / terminal to the simulated base station / terminal protection module through the protection network. 6) After receiving the information, the simulated base station / terminal protection module will control the simulated base station / terminal to start transmitting signals of a given pattern at the effective time and on the given frequency points, and continue for the given duration.

[0071] (4) Coverage extension process Specifically, the coverage of the protection network can be different from that of the service network. When the coverage of the protection network is greater than that of the service network, when a service terminal goes out of the coverage range of the service base station, if the corresponding service terminal protection module is still online and there is a forwarding path to other service terminal protection modules, the service terminal protection module can provide a channel to other service terminal nodes to the peripheral device through the service interface, realizing the coverage extension of the service network. That is, in the service network coverage area, service transmission preferably uses the service network, and in the non-service network coverage area, service transmission is extended with the help of the protection network.

[0072] (5) Guaranteed communication process When the service network is interrupted, such as when the service base station fails or is attacked, if the protection network can still work properly at this time (the reliability of the protection network using a distributed self-relaying anti-jamming network is better than that of the service network), each protection module in the network can provide a channel to other nodes to the peripheral device through the service interface, realizing the guaranteed communication of the service.

[0073] (6) Late access processing process When the network is working properly, when a new service terminal node needs to join the network due to reasons such as power-on, the service terminal protection module processes it in the following way: 1) The service terminal protection module first forms a network (protection network) with other protection modules through the communication unit. 2) The service terminal protection module completes network-level time synchronization through the protection network. 3) When the service terminal protection module receives the currently used radio frequency of the air interface diffused by the service base station protection module, it directly controls the auxiliary frequency switching unit to switch the current radio frequency of the air interface to the currently used radio frequency of the air interface of the service network. 4) After that, the late-access service terminal protection module will work normally like other service terminal protection modules.

[0074] (7)Frequency switching timing selection process In an embodiment of the present invention, the service base station guard module and the service terminal guard module can cooperate with each other to determine the frequency switching moment of the service base station node and / or the service terminal node, where the frequency switching moment at least includes a radio frame boundary, a radio sub-frame boundary, a time slot boundary, a transmit-receive protection band, and a receive-transmit protection band.

[0075] The service base station guard module of the service base station and the service terminal guard module of the service terminal cooperate with each other to determine the specific target frequency and the specific switching timing. The switching timing will be selected from the following moments from the perspective of the service base station to reduce the impact on the air interface transmission service. These moments include: 1) radio frame boundary; 2) radio sub-frame boundary; 3) transmit-receive protection band; 4) receive-transmit protection band.

[0076] It should be understood that when the service base station guard module and the service terminal guard module negotiate the specific frequency switching timing, the frequency switching preparation time, frequency stabilization time, negotiation result diffusion time, and protection interval of the auxiliary frequency switching unit need to be reserved; the frequency switching timing can be selected as the first radio frame boundary or radio sub-frame boundary or transmit-receive protection band or receive-transmit protection band after the reserved time, and the specific optional position can be determined by configuration. When the frequency switching timing arrives, the intelligent control unit of each guard module controls the auxiliary frequency switching unit to synchronously complete the frequency switching of the entire network.

[0077] In summary, the network convergence communication system provided by the present invention, by setting a service base station guard module in the service base station node and a service terminal guard module in the service terminal node, the service base station guard module can realize the perception of the air interface spectrum situation of the service base station node, and the service terminal guard module can realize the perception of the air interface spectrum situation of the service terminal node. Therefore, when it senses that the air interface spectrum situation changes, it can assist the service base station and the service terminal to achieve dynamic cooperative frequency switching, thereby avoiding interference. For a cellular network represented by 5G, when the base station encounters interference and switches frequencies, it involves a complex configuration management process, usually taking minutes (cell reconstruction). At the same time, after the cell frequency changes, all the terminals originally accessing the cell will drop off the line and need to re-access the network; by adopting the network convergence communication system of the present invention, the service network can realize real-time frequency switching to avoid interference; in addition, due to the introduction of analog base stations / terminals, through the cooperation of the guard network, the analog base stations / terminals can effectively simulate the behavior of service base stations / terminals, avoid interference from analog base stations / terminals to the service network, and at the same time confuse the other party, reducing the probability of service base stations and terminals being attacked.

[0078] As another embodiment of the present invention, a communication method is provided, which is applied to the network convergence communication system described above, where, as Figure 6As shown in the figure, it includes: In S100, the service base station guard module in the service base station node at least spreads the air interface frequency currently used by the service base station node. The service base station guard module is communicatively connected to the service base station in the service base station node. In S200, when the service base station guard module determines that the service network is interfered, the service base station guard module controls the air interface frequency of the service base station node to switch, and the service terminal guard module controls the air interface frequency of the service terminal node to switch. In S300, when the service terminal guard module in the service terminal node receives that the air interface frequency of the service base station node spread by the service base station guard module is different from the air interface frequency currently used by the service terminal in the service terminal node, it controls the air interface frequency of the service terminal node to switch so that the air interface frequency of the service terminal node is consistent with the air interface frequency of the service base station node. The service terminal and the service base station can form a service network. The service base station guard module and the service terminal guard module can form a guard network. The service base station guard module and the service terminal guard module can share the changes in the air interface spectrum they sense through the guard network.

[0079] The communication method provided by the present invention is applied in the network convergence communication system described above. By setting a service base station guard module in the service base station node and a service terminal guard module in the service terminal node, the service base station guard module can realize the perception of the air interface spectrum situation of the service base station node, the service terminal guard module can realize the perception of the air interface spectrum situation of the service terminal node, the service base station guard module controls the switching of the air interface frequency of the service base station node, and the service terminal guard module controls the switching of the air interface frequency of the service terminal node. Therefore, when it senses that the air interface spectrum situation changes, it can assist the service base station and the service terminal to achieve dynamic collaborative frequency switching, thereby avoiding interference.

[0080] More specifically, when the service base station guard module determines that the service network is interfered, the service base station guard module controls the air interface frequency of the service base station node to switch, and the service terminal guard module controls the air interface frequency of the service terminal node to switch, including: When the service base station guard module determines that the service network is interfered, the service base station guard module and the service terminal guard module negotiate through the guard network according to the current changes in the air interface spectrum states they sense respectively to determine the air interface frequency and the switching moment for the service network to switch. When the service base station guard module and the service terminal guard module negotiate successfully, the service base station guard module controls the service base station node to switch to the negotiated air interface frequency at the negotiated switching time, and the service terminal guard module controls the service terminal node to switch to the negotiated air interface frequency at the negotiated switching time.

[0081] It should be noted that, in the embodiment of the present invention, the air interface frequency and the working frequency may be the same or different. For example, taking the service base station node as an example, the working frequency of the service base station is F1, then the first auxiliary frequency switching unit in the service base station guard module can convert the working frequency F1 to the air interface frequency F1', where the air interface frequency F1' is the air interface frequency of the service base station node. Here, F1' and the working frequency F1 may be the same or different, and when interference occurs, the service base station guard module can assist in switching the air interface frequency F1' to avoid interference. For example, switching the air interface frequency F1' to F2 can avoid interference, while the working frequency of the service base station remains unchanged at F1. Therefore, this anti-interference method of the embodiment of the present invention does not change the working frequency of the service base station, but avoids interference by changing the air interface frequency of the service base station node. Similarly, the air interface frequency of the service terminal node and the working frequency of the service terminal are also in a similar relationship.

[0082] It should also be noted that, in the embodiment of the present invention, the overall external interface of the service base station node 100 includes a service air interface and a guard air interface. The service air interface, i.e., the switching of the air interface frequency in the service network is targeted at the service air interface, while the guard air interface is the air interface in the guard network, and the sharing of the air interface frequency perception results, etc., are all through the guard air interface. In the embodiment of the present invention, the service air interface and the guard air interface are both set on the service base station guard module 120, and the radio frequency interface of the service base station, etc., as the internal interface of the service base station node, is connected to the service base station guard module. Similarly, the same relationship applies to the interface of the service terminal node 200.

[0083] The specific process of the communication method of the present invention can refer to the specific description of the network convergence communication system in the foregoing text, which will not be repeated here.

[0084] The following takes the business network as a 5G network and the protection network as a distributed self-organizing network as an example to illustrate the communication process of the network converged communication system.

[0085] 1. Single Base Station Network like Figure 7 As shown, in the 5G single base station network, the service base station guard module of service base station node 1 will serve as the synchronization benchmark of the guard network. Other service terminal guard modules, analog base station guard modules, analog terminal guard modules, and independent guard modules all maintain time synchronization with the service base station guard module through the guard network.

[0086] When the service base station guard module of service base station node 1 is connected to an external synchronization device (such as Beidou or GPS), the service base station guard module receives the external synchronization signal and synchronizes with it using the external synchronization signal as the time reference; when the service base station guard module is not connected to an external synchronization device or does not receive an external synchronization signal, it uses its own clock as the time synchronization reference.

[0087] As Figure 8a and Figure 8b shown, the clock unit of the service base station guard module generates the Beidou timing signal through the timing interface and provides it to the 5G base station through the timing interface; the radio frequency interface of the 5G base station is connected to the service radio frequency interface of the service base station guard module through a feeder. For a 5G TDD base station, since the base station uses the same frequency for transmission and reception and distinguishes between transmission and reception in the time domain, the auxiliary frequency switching unit can be switched to the transmission path and the reception path through switch timing control and is synchronized with the 5G base station in terms of beats; for a 5G FDD base station, since reception and transmission are carried out in a different-frequency full-duplex mode, a duplexer can be used instead of the switch in the TDD mode to achieve full-duplex operation in the FDD mode.

[0088] The operating frequency points of the guard network are not related to the frequency points of the 5G service network and the frequency points after frequency switching, preventing mutual interference between systems.

[0089] The service terminal guard module, the analog base station guard module, the analog terminal guard module, the independent guard module and the service base station guard module independently construct a distributed self-organizing network; the service terminal guard module, the analog base station guard module, the analog terminal guard module, the independent guard module maintain time synchronization with the service base station guard module through self-organizing networking.

[0090] The service base station guard module, the service terminal guard module, the analog base station guard module, the analog terminal guard module, the independent guard module, etc. real-time sense the spectrum situation in their respective areas and collect the spectrum situations they sense to the service base station guard module through the guard network. The service base station guard module makes a judgment based on its own and the spectrum situation of the service terminal guard module collected: 1) There is no interference in the current 5G network: Keep the air interface frequency of the current 5G network; 2) There is interference in the current 5G network and there are other suitable frequencies available: Select a suitable target frequency F1. If the target frequency is different from the frequency currently in use, initiate a coordinated frequency switching process; otherwise, keep the air interface frequency of the current 5G network; 3) There is interference in the current 5G network but there are no other more suitable frequencies available: Keep the air interface frequency of the current 5G network.

[0091] When the service base station guard module determines to initiate cooperative frequency switching, it executes according to the following strategy: 1) Determine the earliest frequency effective time point based on the current time and the configured protection interval for frequency switching preparation; 2) Search backward based on the earliest frequency effective time point; a. For 5G TDD base stations: Search for the time domain position of the first receive-transmit or transmit-receive, and record this time domain position as T1; b. For 5G FDD base stations: Search for the first radio frame or sub-frame boundary, and record this time domain position as T1; 3) Generate the signal emission patterns, used frequency points, effective times, and duration of the simulated base station nodes 1 and 2 based on F1 and T1; at the same time, generate the signal emission patterns, used frequency points, effective times, and duration of the simulated terminal node 1; 4) The service base station guard module constructs a frequency switching notification message, which carries at least the target frequency F1 and the effective time T1 of the service terminal node; 5) The service base station guard module constructs a simulated node notification message, which carries at least the Id of the simulated base station / terminal node and the signal emission pattern, used frequency point, effective time, and duration of the corresponding node; 6) The service base station guard module diffuses the constructed frequency switching notification message to each service terminal guard module through multi-hop broadcasting of the guard network; 7) The service base station guard module diffuses the constructed simulated node notification message to each simulated base station or terminal guard module through multi-hop unicasting of the guard network; 8) When the T1 moment arrives, the service base station guard module and the service terminal guard module simultaneously switch the frequency currently used by the 5G network to the target frequency.

[0092] 9) When the effective time specified in the simulated node notification message arrives, each simulated base station / terminal guard module simultaneously switches the currently used frequency to the specified frequency point, and starts simulating signal emission according to the specified pattern until the duration arrives or an updated instruction is received.

[0093] Figure 7 In the simulation, the base station node 2 accesses the guard network through the guard node 1; the service terminal node 5 is far from the coverage area of the service base station 1, but it can achieve the coverage extension of the base station through the service base station nodes 2 / 3, etc.

[0094] When the service base station node 1 fails or is paralyzed due to other reasons, the guard network can form an independent network to realize the interconnection and intercommunication of the service terminal nodes 1 to 5.

[0095] II. Multi-base station network Such as Figure 9As shown in the figure, in a 5G multi-base station network, at least one of the service base station guard modules of service base stations 1 and 2 is configured with an external synchronization device to provide a synchronization reference for the entire network. The service base stations configured with the external synchronization device will follow the time of the service base station with the configured external synchronization device. If both service base station guard modules are configured with external synchronization modules, they will synchronize based on their respective external synchronization sources.

[0096] During the process of constructing the guard network, each guard module determines the tracking relationship based on the synchronization source level of the upper-level node. The synchronization source levels are defined as follows: external synchronization source > self-synchronization source, the node with a smaller hop count to the synchronization source > the node with a larger hop count to the synchronization source. Thus, a synchronization tracking tree rooted at the service base station guard node can be constructed for the guard network to achieve time synchronization for the entire service network.

[0097] The service base station guard module 1 is responsible for the coordination of each node within the coverage area of service base station 1; the service base station guard module 2 is responsible for the coordination of each node within the coverage area of service base station 2; for the nodes outside the coverage area of the service base station, they will be managed by the service base station guard module according to the principle of proximity, that is, they will be managed by the service base station guard node with the least number of arrival hops.

[0098] For a cellular network represented by 5G, when the base station encounters interference and switches frequencies, it involves a complex configuration management process, usually taking minutes (cell reconstruction). At the same time, after the cell frequency changes, all the terminals connected to the original access cell will drop off the line and need to reconnect to the network. By using the network fusion communication system of the present invention, the service network can achieve real-time frequency switching to avoid interference. In addition, due to the introduction of analog base stations / terminals and through the coordination of the guard network, the analog base stations / terminals can effectively simulate the behaviors of service base stations / terminals, avoid interfering with the service network, and at the same time deceive the other party, reducing the probability of the service base stations and terminals being attacked.

[0099] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention. However, 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 considered within the protection scope of the present invention.

Claims

1. A network convergence communication system, characterized in that, Including: A service base station node and a service terminal node, the service base station node and the service terminal node being communicatively connected; The service base station node includes a service base station and a service base station guard module communicatively connected to the service base station. The service base station can provide wireless access services, and the service base station guard module can provide a timing signal for synchronization timing to the service base station, and can sense changes in the air interface spectrum state of the service base station node in real time and control the air interface frequency switching of the service base station node; The service terminal node includes a service terminal and a service terminal guard module communicatively connected to the service terminal. The service terminal can access the service base station through wireless access services, and the service terminal guard module can sense changes in the air interface spectrum state of the service terminal node in real time and control the air interface frequency switching of the service terminal node; The service terminal and the service base station can form a service network; The service base station guard module and the service terminal guard module can form a guard network, and the service base station guard module and the service terminal guard module can share the changes in the air interface spectrum state sensed by each through the guard network.

2. The network convergence communication system according to claim 1, characterized in that The service base station guard module at least includes: a first auxiliary frequency switching unit, a first communication unit, a first spectrum sensing unit, a first intelligent control unit, and a first clock unit. The first auxiliary frequency switching unit, the first communication unit, the first spectrum sensing unit, and the first clock unit are all communicatively connected to the first intelligent control unit, and the first clock unit and the first auxiliary frequency switching unit are both communicatively connected to the first communication unit; The first intelligent control unit is used to control the first spectrum sensing unit to obtain the changes in the air interface spectrum state of the service base station node, control the first communication unit to share the changes in the air interface spectrum state of the service base station node with the guard network, and control the first auxiliary spectrum switching unit to perform air interface frequency switching of the service base station node; The first communication unit is used to establish a communication connection with the guard network through the guard air interface; The first auxiliary spectrum switching unit is connected to the service base station through a service radio frequency interface, and is used to transform the operating frequency of the service base station into the air interface frequency of the service base station node and transform the air interface frequency of the service base station node into the operating frequency of the service base station under the control of the first intelligent control unit, and can perform air interface frequency switching of the service base station node; The first clock unit is connected to the service base station through a timing interface, and is used to provide a timing signal for synchronization timing to the service base station; The first spectrum sensing unit is used to sense the changes in the air interface spectrum of the service base station node under the control of the first intelligent control unit and share the sensing results through the guard air interface.

3. The network convergence communication system according to claim 1, wherein The service terminal guard module at least includes: a second auxiliary frequency switching unit, a second communication unit, a second spectrum sensing unit, a second intelligent control unit, and a second clock unit. The second auxiliary frequency switching unit, the second communication unit, the second spectrum sensing unit, and the second clock unit are all communicatively connected to the second intelligent control unit. The second clock unit and the second auxiliary frequency switching unit are both communicatively connected to the second communication unit; The second intelligent control unit is configured to control the second spectrum sensing unit to obtain the change in the air interface spectrum state of the service terminal node, control the second communication unit to share the change in the air interface spectrum state of the service terminal node with the guard network, and control the second auxiliary spectrum switching unit to perform air interface frequency switching of the service terminal node; The second communication unit is configured to establish a communication connection with the guard network through the guard air interface; The second auxiliary spectrum switching unit is connected to the service terminal through a service radio frequency interface and is configured to, under the control of the second intelligent control unit, convert the operating frequency of the service terminal into the air interface frequency of the service terminal node and convert the air interface frequency of the service terminal node into the operating frequency of the service terminal, and be able to perform air interface frequency switching of the service terminal node; The second clock unit realizes time synchronization with the guard network through the second communication unit; The second spectrum sensing unit is configured to sense the change in the air interface spectrum of the service terminal node under the control of the second intelligent control unit and share the sensing result through the guard air interface.

4. The network convergence communication system according to any one of claims 1 to 3, characterized in that, It further includes: An analog base station node and an analog terminal node. The analog base station node is communicatively connected to the service base station node, and the analog terminal node is communicatively connected to the service terminal node, The analog base station node is configured to simulate the behavior of the service base station node, and the analog terminal node is configured to simulate the behavior of the service terminal node.

5. The network convergence communication system according to claim 4, wherein, The analog base station node includes an analog base station and an analog base station guard module. The analog base station guard module is communicatively connected to the analog base station. The analog base station is configured to at least simulate the air interface behavior of the service base station, and the analog base station guard module is configured to at least implement the frequency switching control behavior of the service base station guard module; The analog terminal node includes an analog terminal and an analog terminal guard module. The analog terminal guard module is communicatively connected to the analog terminal. The analog terminal is configured to at least simulate the air interface behavior of the service terminal, and the analog terminal guard module is configured to at least implement the frequency switching control behavior of the service terminal guard module.

6. The network convergence communication system according to claim 4, wherein The analog base station node includes an analog base station guard module. The analog base station guard module is configured to at least implement the frequency switching control behavior of the service base station guard module. The communication unit in the analog base station guard module is further configured to simulate the air interface behavior of the service base station; The simulation terminal node includes a simulation terminal guard module, and the simulation terminal guard module is used to at least implement the frequency switching control behavior of the service terminal guard module. The communication unit in the simulation terminal guard module is also used to simulate the air interface behavior of the service terminal.

7. The network convergence communication system according to any one of claims 1 to 3, characterized in that, It further includes: A guard node, including an independent guard module, connected to the guard network, and is used to provide a service transmission path at least when the coverage range of the service network is smaller than that of the guard network.

8. The network convergence communication system according to any one of claims 1 to 3, characterized in that, The service base station guard module and the service terminal guard module can cooperate with each other to determine the frequency switching moment of the service base station node and / or the service terminal node, where the frequency switching moment at least includes a radio frame boundary, a radio sub-frame boundary, a time slot boundary, a transmit-receive protection band, and a receive-transmit protection band.

9. A communication method, applied to the network convergence communication system according to any one of claims 1 to 8, characterized in that, It includes: The service base station guard module in the service base station node at least spreads the air interface frequency currently used by the service base station node. The service base station guard module is communicatively connected to the service base station in the service base station node; When the service base station guard module determines that the service network is interfered, the service base station guard module controls the air interface frequency of the service base station node to switch, and the service terminal guard module controls the air interface frequency of the service terminal node to switch; When the service terminal guard module in the service terminal node receives that the air interface frequency of the service base station node spread by the service base station guard module is different from the air interface frequency currently used by the service terminal in the service terminal node, it controls the air interface frequency of the service terminal node to switch so that the air interface frequency of the service terminal node is consistent with the air interface frequency of the service base station node; The service terminal and the service base station can form a service network; The service base station guard module and the service terminal guard module can form a guard network, and the service base station guard module and the service terminal guard module can share the changes in the air interface spectrum status they sense through the guard network.

10. The communication method according to claim 9, wherein When the service base station guard module determines that the service network is interfered, the service base station guard module controls the air interface frequency of the service base station node to switch, and the service terminal guard module controls the air interface frequency of the service terminal node to switch, including: When the service base station guard module determines that the service network is interfered, the service base station guard module and the service terminal guard module negotiate through the guard network according to the changes in the air interface spectrum status they currently sense to determine the air interface frequency and the switching moment to be switched by the service network; When the negotiation between the service base station guard module and the service terminal guard module is successful, the service base station guard module controls the service base station node to switch to the negotiated air interface frequency at the negotiated switching moment, and the service terminal guard module controls the service terminal node to switch to the negotiated air interface frequency at the negotiated switching moment.

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