Wideband and narrowband converged communication system and method based on 5G and PDT

Abstract

The invention provides a wide-narrow band converged communication system and method based on 5G and PDT, and relates to the technical field of network virtualization communication. Wide-narrow band communication situation awareness is executed through a wide-narrow band communication situation awareness module; performing communication network signaling bearer determination and communication network service interruption evaluation in sequence to obtain a corresponding service interruption evaluation result; the broadband and narrowband converged communication coordination module is used for executing broadband and narrowband communication network coordination based on the service interruption evaluation result after the broadband and narrowband communication situation awareness module obtains the service interruption evaluation result so as to obtain a communication network coordination result; and the broadband-narrowband communication effect analysis module is used for executing broadband-narrowband communication effect analysis based on the communication network cooperation result after the broadband-narrowband converged communication cooperation module obtains the communication network cooperation result and judging whether a broadband-narrowband communication effect qualification prompt is sent to a preset person or not, and finally the overall broadband-narrowband communication effect is poor.

Description

Technical Field

[0001] This invention relates to the field of network virtualization communication technology, and in particular to a broadband and narrowband converged communication system and method based on 5G and PDT. Background Technology

[0002] With the upgrading of communication demands and the continuous expansion of application scenarios in the new era, narrowband systems, as the core support for command transmission and on-site collaboration, have become crucial links in ensuring communication efficiency and improving emergency response effectiveness due to their communication capabilities and multi-service adaptability. However, traditional narrowband systems mostly rely on dedicated hardware to realize core functions, which can only meet basic voice dispatching needs. They suffer from defects such as limited transmission rate, single service adaptability, limited coverage, and insufficient interconnection. They are unable to support new services such as high-definition video backhaul and real-time interaction of massive data, nor can they flexibly respond to the differentiated scenario needs such as large-scale event security and cross-regional collaborative communication. In addition, there are obvious shortcomings when relying on a single broadband system for communication. In complex terrain environments, such as densely built-up areas, signal coverage is unstable, communication blind spots are prone to occur, anti-interference capabilities are weak, and it is difficult to cope with the communication security needs in complex electromagnetic environments. Furthermore, they lack the dedicated security guarantees required for police communication and cannot fully meet the requirements of high reliability and high security communication, making it difficult to replace the core value of narrowband systems in dedicated communication scenarios. Therefore, it is particularly important to build a broadband-narrowband converged communication system and related implementation methods by leveraging the technical advantages of broadband systems such as high speed, low latency, and wide connectivity, and combining the core characteristics of narrowband systems such as anti-interference and stable group calls.

[0003] For example, Chinese invention patent CN110072259B discloses a broadband-narrowband converged communication method and related apparatus. This method receives narrowband signals transmitted from a narrowband system, which carry signaling messages related to the broadband system. Based on the broadband system-related signaling messages carried in the narrowband signals, it determines whether there are any pending broadband services in the broadband system. If so, it switches to the broadband system to process the broadband service. This is because the broadband system-related signaling messages are transmitted to the multi-mode communication terminal via narrowband signals.

[0004] To achieve high-performance communication while ensuring continuous and stable communication across different scenarios, existing technologies typically prioritize receiving narrowband signals from narrowband systems (such as PDT (Police Digital Trunking)) and broadband systems (such as 5G) at the terminal. These narrowband signals carry various signaling messages related to the broadband system. Narrowband systems include PDT, NB-IoT, LoRa, Cat-M1, and CDMA1x, while broadband systems include 5G. NR, LTE, Wi-Fi, and other signaling types can provide a basis for subsequent broadband service judgment. The signaling messages that can be carried include, but are not limited to, system messages, paging messages, some radio resource management signaling, some non-access stratum signaling, and some data link layer signaling, among others. The terminal parses the broadband-related signaling carried in the narrowband signal to determine whether there is an pending broadband service in the broadband system. If a pending service is determined to exist, a system handover process is triggered to switch from the current narrowband system to the broadband system. If no service exists, the narrowband system connection is maintained. Based on the differences in the parsed signaling types, the terminal uses different processing procedures to access the corresponding broadband service. At the same time, to ensure the timeliness of broadband-narrowband handover and communication stability, the terminal needs to receive synchronization signals from the broadband system according to a preset period, and complete the synchronization preparation with the broadband system in advance to reduce the periodic handover delay. Ultimately, this improves the speed and stability of broadband-narrowband converged communication.

[0005] Because existing broadband and narrowband converged communication methods rely solely on terminals prioritizing narrowband signal reception and parsing broadband-related signaling, the system handover triggering is inaccurate. This results in shortcomings in the coverage, speed, and service adaptability of a single communication network. Specifically, in complex terrain environments, 5G broadband networks often experience weak signals or coverage blind spots due to dense high-rise buildings. While PDT (Power Delivery Transmission) offers wide coverage, its speed is insufficient. Under conditions of multiple links coexisting, service interruptions or resource waste may occur during broadband / narrowband handover. This means that when terminals are in 5G coverage blind spots, they can only passively access the insufficient-speed PDT network. When high-speed transmission is required, switching to 5G may result in weak signals or coverage gaps. The advantages of both cannot be effectively complemented, and their shortcomings are compounded, making it difficult for terminals to achieve stable access.

[0006] On the other hand, although 5G broadband networks have the capability to support high-speed multimedia services, existing technologies only enable periodic switching for 5G broadband. Because they only ensure basic timing alignment to reduce switching delays, they cannot identify interference types such as co-channel interference and adjacent channel interference in real time, nor can they dynamically adjust transmission parameters (such as modulation and coding schemes, transmit power, and frequency band selection) according to the intensity of interference. Furthermore, 5G broadband networks use high-frequency bands and other technologies that are inherently more sensitive to interference. Therefore, the integration of PDT and 5G is limited to the signaling bearer level. In the absence of cross-system interfaces, its anti-interference capability is weak. In addition, PDT narrowband networks in existing technologies only carry signaling messages related to broadband systems. Although they have strong anti-interference capabilities, they cannot support high-speed multimedia transmission.

[0007] Meanwhile, because existing technologies only achieve basic broadband-to-narrowband switching by prioritizing narrowband signal reception at the terminal side, they cannot achieve format conversion and signaling adaptation between the PDT narrowband protocol and the 5G broadband protocol at the protocol conversion level. Consequently, they cannot resolve the fundamental differences between the two in frame structure, modulation method, and protocol stack layer, resulting in inefficient interoperability between narrowband voice signaling and broadband multimedia service signaling. At the service coordination level, it is impossible to dynamically reserve broadband resources based on the priority of narrowband voice services, nor can it achieve synchronous scheduling of broadband multimedia services and narrowband voice services. This makes it impossible for various signaling messages corresponding to broadband services and narrowband signals to be carried out in a coordinated manner, easily leading to service scheduling conflicts and data transmission gaps. These factors together result in poor performance of broadband and narrowband communication in terms of coverage continuity, service diversity, and transmission stability, further exacerbating the limitations of 5G-based broadband and narrowband communication in practical applications, and failing to meet the high requirements for communication coverage, speed, and service coordination in complex scenarios such as emergency rescue and large-scale events. Summary of the Invention

[0008] This invention provides a broadband and narrowband converged communication system and method based on 5G and PDT, which can improve the overall broadband and narrowband communication performance, thereby meeting the high requirements for communication coverage, speed and service coordination in complex scenarios such as emergency rescue and large-scale events.

[0009] The technical solutions provided in this application are as follows: Firstly, a broadband and narrowband converged communication system based on 5G and PDT is provided, and the specific implementation of the system is as follows: The broadband and narrowband communication situation awareness module is used to perform broadband and narrowband communication situation awareness, which refers to sequentially determining the communication network signaling bearer and assessing the communication network service interruption to obtain the corresponding service interruption assessment results. The broadband and narrowband converged communication coordination module is used to perform broadband and narrowband communication network coordination based on the service interruption assessment results obtained by the broadband and narrowband communication situation awareness module, and to determine whether there are any missing protocols and services in broadband and narrowband communication, in order to obtain the communication network coordination results. The broadband and narrowband communication effect analysis module is used to perform broadband and narrowband communication effect analysis based on the communication network coordination results obtained by the broadband and narrowband converged communication coordination module, which reflects the final service transmission quality of broadband and narrowband converged communication, and to determine whether to send a broadband and narrowband communication effect qualified prompt to the preset personnel.

[0010] Secondly, a broadband and narrowband converged communication method based on 5G and PDT is provided. This method is applied to a broadband and narrowband converged communication system based on 5G and PDT, and includes: First, broadband and narrowband communication situational awareness is performed. This involves sequentially determining the signaling bearer of the communication network and assessing the service interruption of the communication network to obtain the corresponding service interruption assessment results. After the broadband and narrowband communication situational awareness module obtains the service interruption assessment results, broadband and narrowband communication network coordination is performed based on these results. It is also determined whether there are any missing protocols or services in the broadband and narrowband communication to obtain the communication network coordination results. After the broadband and narrowband converged communication coordination module obtains the communication network coordination results, broadband and narrowband communication effect analysis, which reflects the final service transmission quality of broadband and narrowband converged communication, is performed based on these results. Finally, it is determined whether to send a broadband and narrowband communication effect qualified prompt to the preset personnel.

[0011] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: 1. By performing situational awareness of both broadband and narrowband communication, signaling bearer determination and service interruption assessment of the communication network are performed sequentially to obtain the corresponding service interruption assessment results. This process helps to accurately capture the signaling bearer status and service operation shortcomings of the broadband and narrowband converged communication network, realizing a quantitative assessment of the network's anti-interference capability. This enhances the perceptibility and risk prediction capability of the broadband and narrowband converged communication network's operating status. Based on the service interruption assessment results, broadband and narrowband communication network collaboration is performed to determine whether there are any protocol and service collaboration deficiencies in broadband and narrowband communication, obtaining communication network collaboration results. This process helps to enhance the dynamic adaptability and collaborative scheduling capability of broadband and narrowband network resources, improve the smoothness of protocol interaction between heterogeneous networks and the accuracy of service bearing, thereby realizing the high-speed transmission characteristics of 5G and PDT (Police Digital Transmission). Deep collaboration with the high reliability coverage advantage of Trunking (police digital trunking) ensures the stable and smooth operation of converged communication services. Based on the collaborative results of this communication network, it performs broadband and narrowband communication effect analysis and determines whether to send a broadband and narrowband communication effect qualified prompt to the preset personnel. This process helps to enhance the reliability of broadband and narrowband converged communication, realizes comprehensive control over the efficiency of the entire converged communication process, and thus achieves continuous improvement in the quality of broadband and narrowband converged communication network services.

[0012] 2. Dynamic anti-interference coordination between wide and narrowband networks helps reduce the difficulty of interference adaptation in PDT and 5G converged communication. Compared with existing technologies, which cannot identify co-channel interference, adjacent channel interference, and other types of interference in space in real time, nor can they dynamically adjust transmission parameters according to the interference intensity, and since 5G broadband networks use high-frequency bands and other technologies that are inherently more sensitive to interference, the convergence of PDT and 5G only stays at the signaling bearer level. In the absence of cross-system interfaces, its anti-interference capability is weak. Therefore, this invention can accurately identify various types of spatial interference in real time and adjust 5G transmission parameters and transmit power accordingly through dynamic anti-interference coordination between wide and narrowband networks, thereby constructing a dynamic anti-interference system and significantly improving the transmission stability and anti-interference reliability of the converged network in complex interference environments.

[0013] 3. Cross-standard collaborative scheduling helps achieve coverage adaptation and handover of PDT and 5G converged communication. Compared with existing technologies, 5G broadband networks are often weak or have coverage blind spots in complex terrain environments due to obstruction such as dense areas with tall buildings. While PDT has a wide coverage area, its speed is insufficient. Under the condition of multiple links coexisting, service interruption or resource waste may occur during broadband / narrowband handover. Therefore, this invention can achieve complementary adaptation of 5G and PDT coverage in complex terrain through cross-standard collaborative scheduling, ensuring service continuity during handover, while optimizing the allocation of multi-link resources and improving the full coverage capability and service operation efficiency of the converged network.

[0014] 4. The collaborative operation of broadband and narrowband communication helps improve protocol interoperability and service coordination between PDT and 5G converged communication. Compared to existing technologies, the lack of a complete broadband-narrowband protocol conversion and service coordination process prevents the efficient interoperability of narrowband voice signaling and multimedia service signaling on the broadband side due to the inability to achieve format conversion and signaling adaptation between PDT narrowband protocols and 5G broadband protocols at the protocol conversion level. Simultaneously, at the service coordination level, the lack of a full-process coordination mechanism from service request identification and resource requirement matching to cross-network service linkage execution means that broadband resources cannot be dynamically reserved based on the priority of narrowband voice services, nor can synchronous scheduling of broadband multimedia services and narrowband voice services be achieved. This results in the inability to coordinate various signaling messages corresponding to broadband services and narrowband signals, easily leading to service scheduling conflicts and data transmission gaps. Therefore, this invention, through broadband-narrowband communication collaborative operation, can achieve accurate conversion and efficient signaling interoperability between PDT and 5G protocols, thereby realizing resource reservation based on service priority adaptation and synchronous scheduling of cross-standard services. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an overall architecture diagram of a broadband and narrowband converged communication method based on 5G and PDT provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a broadband and narrowband converged communication system based on 5G and PDT provided in an embodiment of the present invention; Figure 3 This is a diagram of a cross-standard collaborative scheduling architecture for broadband and narrowband converged communication based on 5G and PDT, provided by an embodiment of the present invention. Figure 4 This is a flowchart of a broadband and narrowband converged communication method based on 5G and PDT provided in an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0018] Before providing a detailed explanation of the embodiments of this application, the application scenarios of these embodiments will be described first.

[0019] Example 1: A broadband and narrowband converged communication system based on 5G and PDT, which can be implemented by a broadband and narrowband converged communication method based on 5G and PDT: such as Figure 1 The diagram shown illustrates an overall architecture of a broadband and narrowband converged communication method based on 5G and PDT. Figure 2 The diagram shown is a structural schematic of a broadband and narrowband converged communication system based on 5G and PDT provided in an embodiment of the present invention. Figure 2 It includes: a broadband and narrowband communication situational awareness module, a broadband and narrowband converged communication collaboration module, and a broadband and narrowband communication effect analysis module.

[0020] It should be added that, prior to the design of the broadband and narrowband converged communication method based on 5G and PDT in this application, a database storing various settings data was established. The database includes, but is not limited to, preset signaling capacity, broadband and narrowband service interruption duration thresholds, preset 5G signal receiving power, and preset communication protocol-service coordination reference values.

[0021] The database draws data from two sources. First, it collects measured signaling transmission data and dynamic bandwidth change data of 5G networks in different coverage scenarios (such as urban core areas, suburbs, and remote outdoor areas), as well as historical operational data such as call setup efficiency and signal attenuation patterns of PDT networks in typical business scenarios such as emergency dispatch and industry command. It also integrates benchmark parameters specified in industry technical specifications for broadband and narrowband converged communication, 5G NR protocol standards, and PDT digital trunking communication technical requirements. Second, it generates multiple sets of matching reference data for communication protocols and service types by analyzing the operational status under different service loads (such as high-definition video transmission, voice dispatch, and massive data collection) and different network interference environments. All collected and generated data undergoes noise reduction processing, format standardization calibration, and validity verification before being incorporated into the database to ensure that the data can accurately support parameter adaptation and decision execution for converged communication.

[0022] The data structure adopts a hierarchical and associative architecture, dividing the underlying data units into 5G and PDT according to network type. The middle layer sets up a converged and collaborative data unit to establish protocol-service mapping and associate core parameters. The top layer is designed with a dynamic index unit to support rapid data retrieval based on the real-time status of converged communication, ensuring efficient decision-making. In addition, high-frequency core data is stored in distributed memory on edge nodes; massive amounts of non-high-frequency data adopt a combination of cloud storage and local backup, coupled with encryption and access control, to ensure data security and stable operation of converged communication.

[0023] Furthermore, the broadband and narrowband communication situational awareness process is as follows: The signaling load is acquired and compared with a preset signaling load. If the signaling load is less than the preset load, it indicates a weak anti-interference capability in broadband and narrowband communication, and dynamic anti-interference coordination is implemented to enhance the anti-interference capability. Conversely, if the signaling load is greater than the preset load, it indicates that the anti-interference capability of broadband and narrowband communication is at a normal level, and factors causing broadband and narrowband communication anti-interference failures are eliminated to perform a communication network service interruption assessment. The signaling load refers to the total amount of signaling messages that the signaling channel can carry within a preset monitoring time. It is monitored by the signaling collector. The preset signaling load is represented by the average signaling load obtained by the terminal during the broadband and narrowband communication situational awareness process over a historical period. The terminal is a core execution unit integrating broadband and narrowband communication carrying, signaling data acquisition and reporting, dynamic anti-interference coordination execution, service interruption assessment and adaptation, and remote scheduling, used to ensure the continuity and reliability of broadband and narrowband converged communication in complex scenarios.

[0024] In this embodiment, the broadband and narrowband communication situational awareness forms the basis for judging anti-interference capability by comparing the signaling carrying capacity with the preset threshold. It triggers the broadband and narrowband dynamic anti-interference coordination mechanism in a targeted manner to ensure the dynamic adaptation of anti-interference capability and signaling carrying capacity requirements in the converged scenario. This avoids problems such as broadband and narrowband converged communication link interruption and increased transmission latency caused by signaling congestion, insufficient carrying capacity or anti-interference failure, and enhances the reliability and anti-interference adaptability of signaling transmission under the 5G and PDT converged architecture.

[0025] Furthermore, the specific process of dynamic anti-interference coordination between broadband and narrowband is as follows: Based on a preset sensing algorithm, such as a spectrum sensing algorithm, the type and intensity of interference signals in the broadband and narrowband communication process are identified, and the modulation and coding scheme and 5G transmission power of 5G communication are dynamically adjusted; the ratio of the terminal received signal power to the broadband and narrowband noise ratio result is expressed as a broadband and narrowband noise ratio index used to reflect the anti-interference ability of the terminal signal in the scenario of broadband and narrowband interference coexistence. If the broadband and narrowband noise ratio index is lower than the first preset threshold, the modulation and coding scheme level is gradually increased based on the broadband and narrowband noise ratio index-modulation and coding scheme mapping table.

[0026] The terminal received signal power refers to the total signal power received by the terminal from the 5G communication system and the PDT communication system, which is monitored by the spectrum analyzer. If the broadband and narrowband noise ratio index is within the preset broadband and narrowband noise ratio index range, a broadband and narrowband noise ratio index qualified prompt is sent to the preset personnel.

[0027] If the bandwidth noise ratio is higher than the second preset threshold, the modulation and coding scheme level is gradually adjusted back based on the bandwidth noise ratio-modulation and coding scheme mapping table until the bandwidth noise ratio is within the preset bandwidth noise ratio range, so as to improve the spectral efficiency of 5G signals.

[0028] Specifically, during the dynamic adjustment period, if the bandwidth noise ratio (BNR) is higher than the second preset threshold for multiple consecutive preset sampling periods, the modulation and coding scheme (MCC) callback process is triggered. First, the initial MCC sub-level corresponding to the current BNR is matched from the BNR-MCC mapping table. A callback step size of only one sub-level is set each time. Then, the base station lowers the MCC level from the current sub-level by one level and simultaneously sends an instruction to the terminal. After adjustment, a preset verification time is maintained to stabilize the network. During the verification time, the BNR is continuously monitored. If the BNR falls back to the preset BNR range after verification, the callback is completed and the current MCC level is maintained. If the index is still higher than the second preset threshold, the operation of lowering one sub-level and verifying is repeated. If the index is lower than the first preset threshold and excessive callback occurs, the lowering is paused and a one-sub-level callback is performed to prevent service performance from falling below the minimum requirements.

[0029] Meanwhile, the modulation and coding scheme level is only lowered to the mid-level baseline level or the initial sub-level of the low-level, without jumping directly to the lowest sub-level, to prevent excessive reduction in spectrum efficiency. The number of callbacks within the same dynamic adjustment period does not exceed the preset limit to avoid network jitter caused by frequent adjustments. It can also be combined with the broadband and narrowband noise ratio index-modulation and coding scheme mapping table and the 5G broadband and narrowband noise ratio index-modulation and coding scheme mapping table for coordinated adjustment of transmit power. If the index still exceeds the standard after a single modulation and coding scheme callback, the transmit power can be slightly reduced first and then the index change can be verified. Differentiated adjustments can also be implemented according to the terminal service type, with different callback thresholds set for high-definition video terminals and voice terminals. In addition, the sub-level division of the broadband and narrowband noise ratio index-modulation and coding scheme mapping table is optimized based on historical adjustment records to make the adjustment more in line with the actual network needs. If abnormal situations such as service interruption occur during the adjustment process, the callback should be immediately suspended and restored to the modulation and coding scheme level before the adjustment. The modulation and coding scheme level should be re-evaluated after the service is restored.

[0030] The broadband-narrowband noise ratio result refers to the ratio of broadband noise power to narrowband interference power, both monitored by a vector signal analyzer. It is used to quantitatively evaluate the degree of interference coupling in a broadband-narrowband communication network coexistence scenario. The first preset threshold refers to the broadband-narrowband noise ratio index obtained from historical data that just meets the minimum service performance (such as block error rate and throughput) of a determined terminal in a normal broadband-narrowband converged communication scenario. The broadband-narrowband noise ratio index-modulation coding scheme mapping table is preset by a designated person, mapping the currently monitored broadband-narrowband noise ratio index to the corresponding modulation coding scheme level.

[0031] Specifically, the modulation and coding scheme levels include: Low-order modulation and redundancy coding, suitable for strong interference scenarios where the broadband and narrowband noise ratio is below a first preset threshold, meeting the minimum transmission requirements of basic services such as voice and low-rate signaling, and avoiding service interruptions; spectral efficiency refers to the data transmission rate of the 5G communication system under a given bandwidth, monitored by a vector signal analyzer; Mid-order modulation and standard redundancy coding, the baseline adaptation level for broadband and narrowband converged communication, suitable for normal scenarios where the broadband and narrowband noise ratio is within the preset range, stably supporting mainstream services of 5G and PDT collaboration (such as high-definition voice and medium-rate video backhaul), balancing anti-interference and spectrum utilization; High-order modulation and redundancy coding, used to improve spectrum efficiency, suitable for low interference scenarios where the broadband and narrowband noise ratio is slightly higher than a second preset threshold, supporting high-rate data services (such as high-definition video and large file transfer), maximizing spectrum efficiency under the premise of no significant interference; The second preset threshold refers to the broadband and narrowband noise ratio obtained over a historical period that determines the highest service performance (such as block error rate and throughput) for a given terminal in a normal broadband and narrowband converged communication scenario.

[0032] It should be added that the dynamic adjustment time period refers to the time period corresponding to the dynamic adjustment of the modulation and coding scheme of 5G communication and the 5G transmission power; the preset broadband and narrowband noise ratio index range is represented by the interval between the first preset threshold and the second preset threshold; sending prompts to preset personnel in steps of preset unit power ratio can realize the fine configuration of power resources, avoid the problem of insufficient anti-interference capability caused by excessive or insufficient power consumption, thereby ensuring the effectiveness of anti-interference strategy, dynamically adjusting 5G transmission power within the preset 5G transmission power range, and monitoring signaling load in real time.

[0033] To verify the effectiveness of broadband and narrowband dynamic anti-interference coordination, it is determined whether the signaling bearer reacquired after broadband and narrowband dynamic anti-interference coordination is less than the preset signaling bearer; the terminal received signal power refers to the signal power received by the terminal from the 5G communication system; if it is still less, a broadband and narrowband dynamic anti-interference coordination anomaly prompt is sent to the preset personnel, otherwise it indicates that the broadband and narrowband communication anti-interference capability is at a normal level, and the failure factors of broadband and narrowband communication anti-interference are eliminated to perform a communication network service interruption assessment.

[0034] In this embodiment, the wideband and narrowband dynamic anti-interference collaboration achieves accurate identification of the type and intensity of wideband and narrowband interference signals through spectrum sensing algorithms, providing core data support for the dynamic adaptation of anti-interference strategies, realizing intelligent switching of modulation and coding methods between high and low orders, ensuring the reliability of signal transmission through low-order modulation in strong interference scenarios, and switching back to high-order modulation after interference is alleviated to restore the spectrum efficiency of 5G communication, thereby improving the anti-interference adaptability and service continuity of 5G and PDT converged communication.

[0035] Furthermore, the specific process for evaluating communication network service interruptions is as follows: the time interval from the occurrence of an interruption to the restoration of normal operation for narrowband services is expressed as the narrowband service interruption duration; the time interval from the occurrence of an interruption to the restoration of normal operation for broadband services is expressed as the broadband service interruption duration; the interruption durations for both narrowband and broadband services are monitored by the network protocol analyzer.

[0036] To quantify service availability and verify anti-interference effectiveness, the obtained broadband and narrowband service interruption durations are compared with broadband and narrowband service interruption duration thresholds. When the broadband and narrowband service interruption duration exceeds the threshold, cross-system collaborative scheduling is performed to reduce the difficulty of switching between PDT and 5G protocols. Conversely, if the duration is less than the threshold, it indicates that broadband and narrowband communication is continuous and stable. Interference from broadband and narrowband communication link interruptions is eliminated to perform broadband and narrowband converged communication collaboration to determine the effectiveness of PDT and 5G collaboration in the broadband and narrowband converged communication network. The broadband and narrowband service interruption duration threshold refers to the maximum allowable service interruption time limit set by pre-set personnel to ensure the service continuity of the broadband and narrowband converged network.

[0037] In this embodiment, the communication network service interruption assessment achieves a quantitative determination of the operating status of the converged communication link by accurately comparing the interruption duration of broadband and narrowband services with a preset threshold. In scenarios where the service interruption duration exceeds the threshold, it promotes efficient switching between PDT and 5G protocols, reduces the complexity and latency of cross-standard protocol switching, and ensures the accuracy and reliability of the PDT and 5G collaboration effectiveness determination results. This enhances the virtualization scheduling capability of the converged communication network and improves the collaborative efficiency of 5G high-speed transmission and PDT high-reliability coverage.

[0038] Furthermore, the specific process of cross-standard collaborative scheduling is as follows: Based on the terminal monitoring of the 5G demodulation reference signal received power and the 5G interference cancellation margin, when the terminal detects that the 5G demodulation reference signal received power is higher than the preset 5G demodulation reference signal received power, and the 5G interference cancellation margin is greater than the preset 5G interference cancellation margin, the area corresponding to the terminal is represented as a 5G coverage area with good coverage; otherwise, the area corresponding to the terminal is determined to be a 5G coverage blind zone. At the same time, the data volume in the broadband and narrowband communication process is monitored by a spectrum analyzer. If the data volume in the broadband and narrowband communication process is greater than the preset data volume in the broadband and narrowband communication process, a preset resource block is configured in real time to realize the rapid switching from PDT to 5G to ensure that the terminal can obtain high-speed and stable transmission capability as soon as it accesses 5G. The preset 5G demodulation reference signal received power is represented by the average value of the 5G demodulation reference signal received power received by the terminal in the historical time period, and the power corresponding to the interference power suppression that can be achieved by the interference cancellation algorithm is represented by the preset 5G interference cancellation margin.

[0039] Pre-defined resource blocks refer to 5G network physical layer transmission resource units that are pre-planned and reserved by pre-defined personnel. They are used to quickly allocate dedicated transmission channels to terminals during the handover from PDT to 5G, ensuring the high speed and stability of data transmission after the handover. 5G demodulation reference signal received power refers to the average power of the demodulation reference signal received by the terminal on a specific time-frequency resource, which is monitored by a vector signal analyzer. 5G interference cancellation margin refers to the actual interference power suppressed after suppressing interference signals such as co-channel interference from neighboring cells and inter-symbol interference based on interference cancellation algorithms, such as serial interference cancellation and parallel interference cancellation, which is monitored by a spectrum analyzer.

[0040] When the terminal is within the preset coverage area shared by 5G and PDT networks, the current state is determined to be a multi-link coexistence state, and the service bearer link is dynamically allocated based on the link quality. If the interruption duration of broadband and narrowband services reacquired after cross-system collaborative scheduling is still greater than the broadband and narrowband service interruption duration threshold, a cross-system collaborative scheduling anomaly prompt is sent to the preset personnel. Otherwise, it indicates that there is no obvious problem with broadband and narrowband communication coverage and collaborative scheduling, and broadband and narrowband converged communication collaboration is performed, with the preset coverage area set in advance by the preset personnel.

[0041] Dynamic allocation of service bearer links based on link quality specifically refers to: by collecting various link quality indicators in real time, such as bandwidth, packet loss rate, latency, jitter, etc., and combining them with the service quality requirements of different services (such as voice, video, and data transmission), the optimal bearer link is allocated to each type of service; when link quality fluctuates, link switching or load balancing adjustments can be triggered in real time to ensure the stability and reliability of service transmission.

[0042] Example A: When the one-way throughput of the link is used as the criterion for judging the link quality, high-speed services use 5G and basic services such as voice use PDT to achieve complementary advantages of 5G and PDT.

[0043] High-speed services refer to services whose one-way throughput is greater than or equal to the preset one-way throughput, such as video surveillance and large file transfer, which are preferentially allocated to 5G links.

[0044] Basic voice and low-rate signaling services refer to services with a one-way throughput less than the preset one-way throughput, such as trunked voice being preferentially allocated to PDT links.

[0045] Example B: When the end-to-end air interface latency of the link is the core constraint on service continuity, high real-time services are routed to low-latency links, and fault-tolerant services are routed to high-latency links, so as to achieve precise matching of network resources.

[0046] End-to-end air interface delay refers to the time interval from when the physical layer of the transmitting end completes signal modulation and outputs it through the antenna, to when the physical layer of the receiving end completes signal demodulation and submits the data to the upper-layer protocol stack.

[0047] High real-time services refer to services with air interface latency less than a preset threshold, such as interactive commands. Because these services have extremely high requirements for the deterministic response speed, they are preferentially allocated to links with lower and more stable air interface latency.

[0048] Fault-tolerant services refer to services whose air interface latency does not affect performance, such as non-real-time file transfer, background data synchronization, and video recording playback. When the latency of such services does not meet the high real-time requirements, they can be carried by another link to ensure the smooth operation of high-priority services. This can solve the service experience problem in scenarios such as 5G network congestion where the throughput is high but the latency is uncontrollable, as in Example A, and ensure the absolute priority of critical control signaling.

[0049] Example C: When combining channel quality indicators reflecting the robustness of the physical layer of a link with the intrinsic importance level of services from upper-layer applications as the core criterion for link selection, a comprehensive score is calculated for each available link, and services are allocated to the link with the highest comprehensive score to achieve optimal and reliable scheduling of network resources. Channel quality indicators refer to the basic physical layer predictive indicators of link reliability; the intrinsic importance level of a service refers to the absolute priority label of a service defined by the application layer or policy server (e.g., emergency call = 10, real-time video = 7, ordinary data = 3).

[0050] The overall score is calculated as follows: Score = F (channel quality parameter) × G (service type priority). Here, the F function maps channel quality to a basic availability coefficient in the range of 0-1 (a higher value indicates a better physical link), and the G function adjusts the weights based on the service type's preference for link characteristics (e.g., voice prefers PDT coverage and reliability, while video prefers 5G bandwidth).

[0051] The service allocation rule is that the system always allocates services to the link with the highest comprehensive score. For example, even if the channel quality index of 5G is slightly better, for the highest priority "emergency voice", PDT may get a higher comprehensive score due to its extremely high reliability weight (large G value), thus ensuring that voice is transmitted on PDT. This can solve the problem of insufficient adaptability caused by static mapping of a single index, thereby realizing the improvement from single-dimensional static judgment to multi-dimensional dynamic optimization.

[0052] like Figure 3The diagram illustrates a cross-standard collaborative scheduling architecture for broadband and narrowband converged communication based on 5G and PDT, provided by an embodiment of the present invention. First, cross-standard collaborative scheduling is performed. Based on the extended signaling interaction capabilities of a preset interface, when a terminal detects that the 5G signal reception power is lower than a preset 5G signal reception power, the area corresponding to the terminal is marked as a 5G coverage blind zone, and a resource reservation request is initiated to the PDT network. When the terminal is within a preset coverage area shared by both the 5G and PDT networks, the area corresponding to the terminal is marked as a multi-link coexistence state, and service bearer links are dynamically allocated based on link quality. When the terminal detects that the 5G demodulation reference signal received power is higher than the preset 5G demodulation reference signal received power, and the 5G interference cancellation margin is greater than the preset 5G interference cancellation margin, the area corresponding to the terminal is marked as a 5G well-covered area. If the amount of data in the broadband and narrowband communication process is greater than the preset amount of data in the broadband and narrowband communication process, the preset resource block is configured in real time to determine whether the broadband and narrowband service interruption duration after cross-system collaborative scheduling is still greater than the broadband and narrowband service interruption duration threshold. If so, a cross-system collaborative scheduling abnormality prompt is sent to the preset personnel; otherwise, broadband and narrowband converged communication is coordinated.

[0053] In this embodiment, cross-system collaborative scheduling extends the signaling interaction capability of preset interfaces to ensure real-time low-latency interaction of link status and resource data, providing efficient data support for cross-system scheduling decisions. It accurately triggers resource reservation and smooth switching of terminals to the PDT network in 5G coverage blind spots, avoiding service interruptions caused by the lack of 5G signals, realizing rapid switching of terminals from PDT to 5G, and enhancing the full coverage capability and service adaptability of broadband and narrowband converged communication networks.

[0054] Example 2, based on Example 1, only confirms that the interruption duration of narrowband services does not exceed the threshold, but cannot verify whether the broadband and narrowband services can automatically adjust their priorities according to service needs. This can easily lead to the interruption of critical services such as voice due to insufficient broadband resources, posing a hidden risk that data meets the standards but services fail.

[0055] This second embodiment can supplement the verification of the rationality of the broadband and narrowband collaborative priority strategy for special sub-scenarios with complex terrain. Based on simulating real business scenarios, it verifies the service assurance capability under the premise that the data meets the standards, thus filling the gap in the business layer collaborative judgment of the first embodiment. It ensures that the communication system can meet the data threshold requirements and adapt to the priority requirements of key services under special terrain. The specific process is as follows: Priority rules for broadband and narrowband coordination are pre-defined by designated personnel. For example, narrowband prioritizes narrowband services, and broadband prioritizes broadband services. The core function of a narrowband link is to carry low-bandwidth, high-reliability, and high-real-time critical services (such as emergency communication voice commands and IoT status data collection). When a narrowband link simultaneously carries core narrowband services and other multiplexed services, the system prioritizes allocating bandwidth and time slots to the core narrowband services to ensure they are not overwhelmed. In emergency command scenarios, narrowband links transmit both command voice (core narrowband service) and a small amount of environmental monitoring data (multiplexed service). Once the rule is triggered, voice transmission will be prioritized, preventing data transmission from experiencing pauses or interruptions.

[0056] Broadband priority ensures that the core function of broadband links is to carry high-bandwidth, high-volume multimedia services (such as video backhaul and high-definition image transmission). When a broadband link simultaneously carries core broadband services and other low-priority services, the system prioritizes allocating resources to the core broadband services to ensure their transmission speed and smoothness. When a 5G broadband link simultaneously transmits on-site monitoring video (core broadband service) and downloads files (low-priority service), once the rule is triggered, the video stream will receive priority bandwidth, preventing video stuttering caused by file downloads.

[0057] The system monitors narrowband signal strength using a spectrum analyzer and broadband speed using a 5G drive tester. When the narrowband signal strength is greater than or equal to a preset narrowband signal strength, and the broadband speed is less than a preset broadband speed, the system automatically switches the broadband service from broadband to narrowband. Broadband and narrowband services include broadband and narrowband services. Broadband services refer to communication services that can provide high-speed, high-capacity data transmission. Their core characteristic is a wide bandwidth, which can simultaneously carry multiple high-bandwidth services such as voice, video, and data. Narrowband services refer to communication services with low transmission rates and narrow bandwidth, which are mainly suitable for low-speed data transmission needs and can usually only support a single or simple service type. Conversely, narrowband services are transmitted directly from broadband to the terminal.

[0058] Based on the terminal initiating mixed service requests, such as concurrent narrowband and broadband services, simulate real communication load; through VNF (Virtual Network Function), real-time monitoring is performed on parameters reflecting stable narrowband signal characteristics, parameters reflecting broadband rate changes, and broadband service transmission rates, and the above three parameters are represented as the final monitoring results; the parameters reflecting stable narrowband signal characteristics specifically refer to the narrowband signal strength and fluctuation amplitude of the narrowband signal obtained at preset signal strength sampling points set in advance by preset personnel.

[0059] Based on the parameters that reflect the stability of the narrowband signal, it is determined whether the narrowband signal strength is greater than or equal to the preset narrowband signal strength, and whether the amplitude of the fluctuating narrowband signal is less than or equal to the preset fluctuating narrowband signal amplitude.

[0060] If the narrowband signal strength is greater than or equal to the preset narrowband signal strength and the amplitude of the fluctuating narrowband signal is less than or equal to the preset fluctuating narrowband signal amplitude, it is marked as a stable narrowband signal; otherwise, it is marked as a fluctuating narrowband signal, and the amplitude of the fluctuating narrowband signal is monitored by a spectrum analyzer.

[0061] The parameter reflecting the change in broadband speed specifically refers to the broadband download speed obtained at the preset signal strength sampling point; the result of the ratio of the preset simulated monitoring time period to the broadband low speed period is expressed as the broadband speed result; the broadband low speed period refers to the duration during which the broadband speed is lower than the preset broadband speed within the preset simulated monitoring time period.

[0062] If the broadband rate result is greater than the preset broadband rate ratio threshold, it is marked as a stable broadband rate; otherwise, it is marked as an unstable broadband rate. The preset simulated monitoring time period refers to the time period corresponding to the simulated real business scenario. In order to verify the continuity of broadband services, it is determined whether the transmission rate of broadband services is greater than or equal to the transmission rate calibration value.

[0063] If the transmission rate of the broadband service monitored by the Ethernet analyzer is greater than or equal to the transmission rate calibration value set in advance by the preset personnel, it indicates that the broadband service transmission is continuous and is marked as stable. Conversely, it indicates that the broadband service transmission is interrupted and is marked as fluctuating.

[0064] If the monitoring results meet the following two conditions, the wide and narrow band coordination priority strategy is deemed reasonable. The conditions are: first, the narrow band signal strength is greater than or equal to the preset narrow band signal strength, and the amplitude of the fluctuating narrow band signal is less than or equal to the preset fluctuating narrow band signal amplitude. Second, the broadband speed result is not greater than the preset broadband speed ratio threshold. When the broadband rate is unstable, i.e. the broadband rate result is not greater than the preset broadband rate ratio threshold, if the monitoring result does not meet the condition, it is determined that the broadband and narrowband coordination priority strategy is unreasonable. Specific abnormal situations include: the situation marked as the unstable broadband rate, where the narrowband service has not been switched to narrowband bearer and still occupies broadband resources, ultimately leading to the interruption of voice calls.

[0065] After narrowband services switch to narrowband bearers and broadband resources are released, broadband services fluctuate, meaning the transmission rate of broadband services is lower than the rated transmission rate. When the broadband-narrowband coordination priority strategy is unreasonable, the priority weight of broadband voice services needs to be adjusted through VNF. Specifically, this means sending a prompt to preset personnel to reduce the priority weight of broadband voice services.

[0066] After the priority weight of broadband voice services is adjusted, the monitoring results are reacquired. If the monitoring results are qualified, a cross-system collaborative scheduling qualification prompt is sent to the preset personnel; otherwise, an abnormal monitoring result prompt is sent to the preset personnel. VNF refers to Virtual Network Function, which is a functional entity that runs on virtualized infrastructure such as general-purpose servers after software-fiberizing traditional dedicated hardware network functions (such as firewalls, load balancers, routers, etc.). The qualification criterion is that when a stable narrowband signal or an unstable broadband rate is present, the voice service automatically switches to narrowband bearer, and the broadband service transmission rate reaches the transmission rate calibration value.

[0067] In this embodiment, cross-standard collaborative scheduling can effectively reduce the voice call interruption problem caused by limited broadband resources, ensure that the broadband and narrowband collaborative priority strategy always meets the actual business needs, give full play to the high reliability advantage of PDT narrowband in voice service carrying and the technical characteristics of 5G broadband in high-speed data transmission, and improve the intelligent scheduling level and adaptive optimization capability of broadband and narrowband converged communication in mixed service scenarios.

[0068] Furthermore, the specific process of broadband and narrowband converged communication collaboration is as follows: In order to verify the qualification of broadband and narrowband converged communication collaboration, it is determined whether the request response delay of narrowband and broadband meets the pre-set communication protocol-service collaboration conditions; if the request response delay of narrowband and broadband does not meet the pre-set communication protocol-service collaboration conditions, it is determined that there is a problem of protocol and service collaboration in broadband and narrowband communication, and broadband and narrowband communication collaboration operation is performed to achieve efficient collaboration between broadband and narrowband communication protocols and services, thereby ensuring the stable and smooth operation of communication services.

[0069] Narrowband and broadband request-response latency refers to the time interval between a user initiating a service request and the terminal responding. If the narrowband and broadband request-response latency meets the pre-set communication protocol-service coordination conditions, it indicates that the protocol and service coordination capabilities of broadband and narrowband communication are at a normal level, and broadband and narrowband communication effect analysis is performed. The pre-set communication protocol-service coordination conditions mean that the parameter value corresponding to the narrowband and broadband request-response latency is greater than or equal to the corresponding pre-set communication protocol-service coordination reference value set by pre-set personnel.

[0070] In this embodiment, the broadband and narrowband converged communication collaboration quantifies the response latency of narrowband and broadband requests, thereby achieving a quantitative assessment of the collaboration status of broadband and narrowband communication protocols and services, accurately locating the problem of missing protocol and service collaboration, and ensuring the stable and smooth operation of converged communication services.

[0071] Furthermore, the specific process of broadband and narrowband communication collaborative operation is as follows: Based on the protocol conversion virtual network function deployed on the terminal, the protocol stack interface of PDT and 5G is accessed to achieve protocol adaptation. Specifically, the virtualized interface based on VNF simulates and accesses the air interface protocol stack of PDT and the NG / RAN interface protocol stack of the 5G system respectively, and performs real-time parsing, mapping and reconstruction of the signaling plane and data plane protocols of both parties, ultimately achieving equivalent conversion between PDT control signaling and 5G control signaling; assess the current cross-system service carrying capacity. If the cross-system service carrying capacity is greater than the preset cross-system service carrying capacity, the transmitted broadband and narrowband data are rescheduled to avoid service interruption or policy conflict caused by changes in underlying network parameters. Otherwise, it is determined to be a normal communication process, and a normal communication prompt is sent to the preset personnel.

[0072] For example, taking an emergency command scenario (PDT voice dispatch and 5G high-definition video backhaul) as an example, the specific process of rescheduling is explained. First, a preset cross-system service capacity threshold is set for a single terminal simultaneously transmitting one PDT group call voice and one 5G 1080P high-definition video stream: 100 messages per second for the signaling plane and 20Mbps for the data plane. The terminal's built-in VNF has implemented the parsing and mapping of the PDT air interface protocol and the 5G GN / RAN interface protocol. When an emergency situation causes multiple terminals to simultaneously transmit video, and the current cross-system service capacity reaches 30Mbps for the data plane and 150 messages per second for the signaling plane, exceeding the preset threshold and posing a risk of service interruption, the VNF will first detect the overload and trigger the rescheduling mechanism. Then, according to the preset service priority of "PDT group call voice > 5G high-definition video backhaul > 5G ordinary data," scheduling is carried out following the principle of ensuring high-priority services are not interrupted and compressing low-priority service resources. The excess 1080P (20Mb) video stream will be rescheduled on the data plane. (ps) The video stream is downgraded to 720P (8Mbps), reducing the data plane usage of a single terminal to 8Mbps. Simultaneously, time-slot slicing is performed on the video streams of non-core terminals, allocating them to different 5G subcarrier time slots to avoid contention for time slot resources. Normal data transmission is also paused to release resources. On the signaling plane, PDT group call setup and instruction issuance signaling are marked as the highest priority, skipping queuing and directly mapped to the 5G signaling channel for transmission. At the same time, transmission request signaling for multiple video frames is merged and compressed, reducing the number of signaling messages from 150 per second to 90 per second. After scheduling, the VNF checks the carrying capacity again. At this point, the data plane speed of 18Mbps and the signaling plane speed of 90 messages per second are both below the preset thresholds, achieving the collaborative communication goal of uninterrupted PDT voice and 5G video downgraded from high definition to standard definition without lag. When the number of terminals at the emergency site decreases and the carrying capacity falls below the threshold, the VNF automatically triggers reverse scheduling, restoring the 720P video stream to 1080P, restarting normal data transmission, and restoring the optimal service experience.

[0073] If the request-response delay of the narrowband and broadband connections reacquired after the broadband-narrowband communication collaboration operation does not meet the pre-set communication protocol-service collaboration conditions, an abnormal broadband-narrowband communication collaboration operation prompt will be sent to the preset personnel; otherwise, it indicates that the broadband-narrowband communication network collaboration is qualified, and broadband-narrowband communication effect analysis will be performed based on the broadband-narrowband data obtained in this process.

[0074] In this embodiment, the broadband and narrowband communication collaborative operation achieves precise docking between PDT and 5G heterogeneous protocol stack through the protocol conversion virtual network function, effectively reducing the risk of service interruption and thus ensuring the stability of converged communication under high load scenarios.

[0075] Furthermore, the specific process for analyzing the broadband and narrowband communication effects is as follows: When transmitting multimedia services through 5G broadband links, such as high-definition video backhaul at emergency sites, live streaming of large-scale events, or monitoring videos, the average data transmission rate of the multimedia stream is used as the broadband and narrowband communication rate to reflect the qualification of the 5G broadband synergy effect, and is monitored by a traffic probe; when the terminal transmits voice services through the PDT narrowband link, the number of times the voice call is interrupted is used as the narrowband communication interruption quantity to reflect the terminal's voice reception, and is monitored by a narrowband signal analyzer.

[0076] Multimedia streaming data refers to a continuous data sequence containing two or more media types transmitted in a streaming manner over a network. While determining whether the broadband and narrowband communication rates are greater than or equal to the preset broadband communication rate, it is also determined whether the narrowband communication interruption rate is less than or equal to the preset narrowband communication interruption rate. The preset narrowband communication interruption rate is the maximum number of interruptions that occur in narrowband services over a historical period while ensuring service continuity. If the broadband communication rate is greater than or equal to the preset broadband communication rate set in advance by the preset personnel, and the narrowband communication interruption rate is less than or equal to the preset narrowband communication interruption rate, a broadband / narrowband communication effect qualification prompt is sent to the preset personnel; otherwise, a broadband / narrowband communication effect abnormality prompt is sent to the preset personnel.

[0077] In this embodiment, the analysis of broadband and narrowband communication effects can intuitively reflect the synergistic effect of 5G and PDT. Through dual-dimensional core indicators, it can achieve an objective and accurate judgment of the overall effect of broadband and narrowband converged communication, enhance the credibility of the solution implementation, ensure high-quality transmission of core services such as multimedia and voice, and improve the service assurance capability and operational reliability of broadband and narrowband converged communication networks.

[0078] like Figure 4The diagram shows a flowchart of a broadband and narrowband converged communication method based on 5G and PDT provided by an embodiment of the present invention. During the broadband and narrowband converged communication process, broadband and narrowband communication situational awareness, reflecting the basic operational status of the broadband and narrowband converged communication network, is first executed. Then, communication network signaling bearer determination, used to assess signaling bearer adaptability, and communication network service interruption assessment, used to assess the anti-interference capability of broadband and narrowband converged communication, are performed sequentially to obtain corresponding service interruption assessment results. After the broadband and narrowband communication situational awareness module obtains the service interruption assessment results, broadband and narrowband communication network coordination, reflecting the effectiveness of 5G and PDT communication network collaboration, is executed based on these results. It is also determined whether there are any protocol and service coordination deficiencies in broadband and narrowband communication to obtain communication network coordination results. After the broadband and narrowband converged communication coordination module obtains the communication network coordination results, broadband and narrowband communication effect analysis, reflecting the final service transmission quality of broadband and narrowband converged communication, is performed based on these results. Finally, it is determined whether to send a broadband and narrowband communication effect qualification prompt to preset personnel.

[0079] In summary, by performing broadband and narrowband communication situational awareness, and sequentially determining the signaling bearer status and assessing service interruption in the communication network to obtain corresponding service interruption assessment results, this process helps to accurately capture the signaling bearer status and operational shortcomings of the broadband and narrowband converged communication network. It enables a quantitative assessment of the network's anti-interference capabilities, thereby enhancing the perceptibility and risk prediction capabilities of the broadband and narrowband converged communication network's operational status. Based on the service interruption assessment results, broadband and narrowband communication network coordination is performed to determine whether there are any protocol and service coordination deficiencies in broadband and narrowband communication, thus obtaining communication network coordination results. This process has... This process helps enhance the dynamic adaptability and collaborative scheduling capabilities of broadband and narrowband network resources, improves the smoothness of protocol interaction between heterogeneous networks and the accuracy of service carrying, thereby achieving deep synergy between the high-speed transmission characteristics of 5G and the high-reliability coverage advantages of PDT, ensuring the stable and smooth operation of converged communication services. Based on the collaborative results of this communication network, broadband and narrowband communication effect analysis is performed, and it is determined whether to send a broadband and narrowband communication effect qualified prompt to preset personnel. This process helps enhance the reliability of broadband and narrowband converged communication, realizes comprehensive control over the efficiency of the entire converged communication process, and thus achieves continuous improvement in the quality of broadband and narrowband converged communication network services.

[0080] The above-disclosed embodiments are merely some examples of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A broadband and narrowband converged communication system based on 5G and PDT, characterized in that, The system includes: The broadband and narrowband communication situation awareness module is used to perform broadband and narrowband communication situation awareness, wherein the broadband and narrowband communication situation awareness refers to sequentially performing communication network signaling bearer determination and communication network service interruption assessment to obtain the corresponding service interruption assessment results. The broadband and narrowband converged communication coordination module is used to perform broadband and narrowband communication network coordination based on the service interruption assessment result obtained by the broadband and narrowband communication situation awareness module, and to determine whether there are any missing protocols and services in broadband and narrowband communication, so as to obtain the communication network coordination result. The broadband and narrowband communication effect analysis module is used to perform broadband and narrowband communication effect analysis based on the communication network collaboration results obtained by the broadband and narrowband converged communication collaboration module, which reflects the final service transmission quality of broadband and narrowband converged communication, and determine whether to send a broadband and narrowband communication effect qualified prompt to the preset personnel.

2. The broadband and narrowband converged communication system based on 5G and PDT as described in claim 1, characterized in that, The specific process of broadband and narrowband communication situational awareness is as follows: Obtain the signaling bearer capacity and compare it with the preset signaling bearer capacity for analysis; If the signaling capacity is less than the preset signaling capacity, then broadband and narrowband dynamic anti-interference coordination will be performed. Conversely, a communication network service interruption assessment will be performed.

3. The broadband and narrowband converged communication system based on 5G and PDT as described in claim 2, characterized in that, The specific process of the broadband and narrowband dynamic anti-interference coordination is as follows: Based on a preset sensing algorithm, the type and intensity of interference signals in broadband and narrowband communication processes are identified, and the modulation and coding scheme and 5G transmission power of 5G communication are dynamically adjusted. The ratio of the terminal received signal power to the broadband noise ratio result is expressed as the broadband noise ratio index. If the broadband noise ratio index is lower than the first preset threshold, the modulation and coding scheme level is gradually increased based on the broadband noise ratio index-modulation and coding scheme mapping table. If the broadband noise ratio is within the preset broadband noise ratio range, a broadband noise ratio qualified prompt will be sent to the preset personnel. If the bandwidth-narrowband noise ratio index is higher than the second preset threshold, based on the bandwidth-narrowband noise ratio index-modulation coding scheme mapping table, the modulation coding scheme level is gradually adjusted back until the bandwidth-narrowband noise ratio index is within the preset bandwidth-narrowband noise ratio index range. The broadband and narrowband noise ratio index-modulation coding scheme mapping table is pre-set by preset personnel, which maps the currently monitored broadband and narrowband noise ratio index to the corresponding modulation coding scheme level; The system sends prompts to designated personnel and dynamically adjusts the 5G transmission power within a designated 5G transmission power range using a designated unit power ratio as the step size, while also monitoring the signaling load in real time. Determine whether the signaling bearer reacquired after broadband and narrowband dynamic anti-interference coordination is less than the preset signaling bearer; The terminal received signal power refers to the signal power received by the terminal from the 5G communication system; If it is still less than the specified value, a dynamic anti-interference coordination anomaly alert for both wideband and narrowband will be sent to the designated personnel; otherwise, a communication network service interruption assessment will be performed.

4. The broadband and narrowband converged communication system based on 5G and PDT as described in claim 3, characterized in that, The specific process for assessing communication network service interruptions is as follows: The time interval from the occurrence of a narrowband service interruption to its recovery is expressed as the narrowband service interruption duration. The time interval from when a broadband service is interrupted to when it is restored to normal is expressed as the broadband service interruption duration. Obtain the duration of broadband and narrowband service interruptions, which includes narrowband service interruption duration and broadband service interruption duration; Compare the broadband and narrowband service interruption durations obtained above with the broadband and narrowband service interruption duration thresholds; When the duration of broadband and narrowband service interruption exceeds the broadband and narrowband service interruption duration threshold, cross-system collaborative scheduling will be performed. Conversely, if the bandwidth is not wide, then wide and narrowband converged communication collaboration is performed.

5. A broadband and narrowband converged communication system based on 5G and PDT as described in claim 4, characterized in that, The specific process of cross-system collaborative scheduling is as follows: Based on terminal monitoring of 5G demodulation reference signal received power and 5G interference cancellation margin; When the terminal detects that the 5G demodulation reference signal received power is higher than the preset 5G demodulation reference signal received power, and the 5G interference cancellation margin is greater than the preset 5G interference cancellation margin, the area corresponding to the terminal is marked as a 5G coverage area; otherwise, the area corresponding to the terminal is determined to be a 5G coverage blind zone. Simultaneously monitor the data volume during broadband and narrowband communication. If the data volume during broadband and narrowband communication exceeds the preset data volume during broadband and narrowband communication, then configure the preset resource block in real time. When the terminal is within the preset coverage area shared by 5G and PDT networks, the current state is determined to be a multi-link coexistence state, and the service bearer links are dynamically allocated based on the link quality. If the interruption duration of the broadband and narrowband services reacquired after cross-system collaborative scheduling is still greater than the broadband and narrowband service interruption duration threshold, a cross-system collaborative scheduling exception prompt will be sent to the preset personnel. Conversely, if the bandwidth is not wide, then wide and narrowband converged communication collaboration is performed.

6. The broadband and narrowband converged communication system based on 5G and PDT as described in claim 4, characterized in that, The specific process of cross-system collaborative scheduling is as follows: Obtain narrowband signal strength and broadband speed; When the narrowband signal strength is greater than or equal to the preset narrowband signal strength and the broadband rate is less than the preset broadband rate, the broadband and narrowband services will be automatically switched from broadband to narrowband. Otherwise, the broadband and narrowband services will be directly transmitted from broadband to the terminal. The narrowband signal strength and amplitude of the fluctuating narrowband signal are obtained at preset signal strength sampling points; Based on the parameters that reflect the stability of the narrowband signal, it is determined whether the narrowband signal strength is greater than or equal to the preset narrowband signal strength, and whether the amplitude of the fluctuating narrowband signal is less than or equal to the preset fluctuating narrowband signal amplitude. If the narrowband signal strength is greater than or equal to the preset narrowband signal strength and the amplitude of the fluctuating narrowband signal is less than or equal to the preset amplitude of the fluctuating narrowband signal, it is marked as a stable narrowband signal; otherwise, it is marked as a fluctuating narrowband signal. The result of the ratio of the duration of the preset simulated monitoring period to the duration of the broadband low-speed period is expressed as the broadband speed result; The broadband low-speed duration refers to the duration during which the broadband speed is lower than the preset broadband speed within the preset simulated monitoring time period. If the broadband rate result is greater than the preset broadband rate ratio threshold, then mark it as a stable broadband rate. Conversely, an unstable broadband rate is marked. Determine whether the transmission rate of the broadband service is greater than or equal to the rated transmission rate. If the transmission rate of the broadband service is greater than or equal to the transmission rate calibration value, it is marked as stable broadband service; otherwise, it is marked as fluctuating broadband service. If the monitoring results meet the following conditions, the wide and narrow band coordination priority strategy is deemed reasonable. The conditions are: first, the narrow band signal strength is greater than or equal to the preset narrow band signal strength and the amplitude of the fluctuating narrow band signal is less than or equal to the preset amplitude of the fluctuating narrow band signal. Second, the broadband speed result is greater than the preset broadband speed ratio threshold. If the monitoring results do not meet the conditions, the broadband and narrowband coordination priority strategy is deemed unreasonable. When the broadband-narrowband collaborative priority strategy is unreasonable, the priority weight of broadband voice services needs to be adjusted through VNF. Specifically, this means: Send a notification to designated personnel to reduce the priority of broadband voice services; After the priority weight of broadband voice services is adjusted, the monitoring results are reacquired. If the monitoring results are qualified, a cross-system collaborative scheduling qualified prompt is sent to the preset personnel; otherwise, an abnormal monitoring result prompt is sent to the preset personnel. The qualification criteria refer to the situation where a stable narrowband signal or an unstable broadband rate is present, the voice service automatically switches to narrowband bearer, and the broadband service transmission rate reaches the specified transmission rate value.

7. A broadband and narrowband converged communication system based on 5G and PDT as described in claim 6, characterized in that, The specific process of broadband and narrowband converged communication collaboration is as follows: Determine whether the request-response latency of narrowband and broadband meets the pre-set communication protocol-service coordination conditions; If the request-response delay between narrowband and broadband does not meet the pre-set communication protocol-service coordination conditions, then broadband-narrowband communication coordination operation will be performed. If the request-response latency of narrowband and broadband meets the pre-set communication protocol-service coordination conditions, then perform broadband and narrowband communication effect analysis. The pre-set communication protocol-service collaboration conditions indicate that the parameter values ​​corresponding to the request-response delays of narrowband and broadband are greater than or equal to the corresponding pre-set communication protocol-service collaboration reference values.

8. A broadband and narrowband converged communication system based on 5G and PDT as described in claim 7, characterized in that, The specific process of the broadband and narrowband communication cooperative operation is as follows: Based on the protocol conversion virtual network function, the protocol stack interface between PDT and 5G is accessed to achieve protocol adaptation, specifically: The virtualized interface based on VNF simulates and accesses the air interface protocol stack of PDT and the NG / RAN interface protocol stack of 5G system respectively, and performs real-time parsing, mapping and reconstruction of the signaling plane and data plane protocols of both parties. Assess the current cross-system service carrying capacity. If the cross-system service carrying capacity is greater than the preset cross-system service carrying capacity, then reschedule the transmitted broadband and narrowband data. Otherwise, determine it as a normal communication process and send a normal communication prompt to the preset personnel. If the request response delay of narrowband and broadband after the broadband-narrowband communication collaboration operation does not meet the preset communication protocol-service collaboration conditions, send a broadband-narrowband communication collaboration operation abnormality prompt to the preset personnel. Conversely, if the broadband and narrowband communication networks cooperate successfully, then broadband and narrowband communication effect analysis can be performed based on the broadband and narrowband data obtained in this process.

9. A broadband and narrowband converged communication system based on 5G and PDT as described in claim 8, characterized in that, The specific process for analyzing the broadband and narrowband communication performance is as follows: When transmitting multimedia services through 5G broadband links, the average rate of multimedia stream data transmission is taken as the broadband and narrowband communication rate. The number of interruptions in the narrowband service transmitted by the terminal through the PDT narrowband link is taken as the narrowband communication interruption quantity. While determining whether the broadband and narrowband communication rates are greater than or equal to the preset broadband communication rate, it is also determined whether the narrowband communication interruption is less than or equal to the preset narrowband communication interruption. If the broadband communication rate is greater than or equal to the preset broadband communication rate, and the narrowband communication intermittent amount is less than or equal to the preset narrowband communication intermittent amount, a notification indicating that the broadband and narrowband communication effects are satisfactory will be sent to the preset personnel; otherwise, a notification indicating that the broadband and narrowband communication effects are abnormal will be sent to the preset personnel.

10. A broadband and narrowband converged communication method based on 5G and PDT, applied to the broadband and narrowband converged communication system based on 5G and PDT as described in any one of claims 1-9, characterized in that, The method includes: Perform broadband and narrowband communication situational awareness, which refers to sequentially determining the signaling bearer of the communication network and assessing the service interruption of the communication network to obtain the corresponding service interruption assessment results. After the broadband and narrowband communication situation awareness module obtains the service interruption assessment result, it performs broadband and narrowband communication network coordination based on the service interruption assessment result and determines whether there is a lack of protocol and service coordination in broadband and narrowband communication in order to obtain the communication network coordination result. After the broadband and narrowband converged communication collaboration module obtains the communication network collaboration results, it performs broadband and narrowband communication effect analysis based on the communication network collaboration results to reflect the final service transmission quality of broadband and narrowband converged communication and determines whether to send a broadband and narrowband communication effect qualified prompt to the preset personnel.

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