Wideband and narrowband fused communication method and terminal

Abstract

The invention belongs to the technical field of wireless communication, and discloses a broadband and narrowband fused communication method and a terminal. Comprising the steps of collecting communication state parameters and performing data cleaning to obtain accurate communication state parameters; executing link switching verification based on the precise communication state parameters, and generating a switching evaluation label to mark the precise communication state parameters to obtain a switching mark parameter set; performing communication quality prediction, and constructing trend deviation characteristics based on a prediction result; carrying out heterogeneous synchronization confirmation based on the trend deviation characteristics and the switching evaluation labels, and outputting fusion consistent flag parameters; performing multi-terminal communication optimization based on the fusion consistent flag parameter, and outputting multi-terminal communication broadcast; in combination with multi-terminal communication broadcast, a link communication strategy is constructed by fusing the consistent mark parameter and the switching mark parameter set, and the link communication strategy is sent to a preset communication control terminal for communication and real-time display; the accuracy and stability of wide-narrow band converged communication are improved, and the multi-terminal cooperative scheduling capability is enhanced.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and more specifically, to a broadband and narrowband converged communication method and terminal. Background Technology

[0002] With the development of digital communication, although narrowband communication has the advantages of wide coverage and high reliability, its low data transmission rate cannot meet the needs of multimedia services. Broadband communication can provide high-speed data, video backhaul and other multimedia services, but the reliability and real-time performance of communication may be affected at the edge of network coverage or in areas with signal congestion. At present, traditional communication methods can realize basic dual-mode converged communication functions, but they are often limited in more complex communication scenarios, and therefore still face many technical bottlenecks.

[0003] In the link switching phase of converged communication scenarios, broadband and narrowband modules communicate through different network architectures. For example, broadband is carried by communication networks such as LTE or 5G, while narrowband relies on trunking networks such as DMR or PDT for transmission. However, traditional communication methods only focus on the current link signal strength and ignore the registration and access preparation status of the secondary link. This can easily lead to communication interruptions because the secondary link is not ready after the primary link is released. In addition, the communication link quality may experience short-term fluctuations and then recover quickly during converged communication. However, traditional communication methods only make switching judgments based on the current sampled value, causing the communication control terminal to mistakenly believe that the link is faulty. The optimal handover window was missed because the road had already returned to normal. Furthermore, due to differences in the status reporting mechanisms between broadband and narrowband communication modules, group number information may experience temporary asynchrony. Traditional communication methods use a single comparison method for consistency judgment, which can easily misjudge temporary asynchrony as permanent mismatch, triggering erroneous handover. On the other hand, when multiple communication terminals are simultaneously in the handover evaluation state, resource contention occurs. Traditional communication methods make handover decisions independently for each terminal without a state sharing mechanism, leading to multiple terminals simultaneously switching to the same channel, causing resource conflicts and invalid access, affecting the collaborative scheduling capability and communication reliability of converged communication.

[0004] In view of this, the present invention proposes a broadband and narrowband converged communication method and terminal to solve the above problems. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art and to achieve the above objectives, the present invention provides the following technical solution: a broadband and narrowband converged communication method, comprising: S1. Collect communication status parameters and perform data cleaning to obtain accurate communication status parameters; S2. Perform link handover verification based on precise communication status parameters, generate handover evaluation labels based on the verification results, and mark the precise communication status parameters to obtain a handover label parameter set; S3. Perform communication quality prediction on the handover marker parameter set, and construct trend deviation features based on the prediction results; S4. Based on trend deviation characteristics and handover evaluation labels, heterogeneous synchronization confirmation of the handover flag parameter set is performed, and fused consistent flag parameters are output. S5. Optimize multi-terminal communication based on fusion and consistency flag parameters, and output multi-terminal communication broadcast; S6. Construct a link communication strategy by combining multi-terminal communication broadcast, fusion of consistent flag parameters and switching flag parameter sets, and send the link communication strategy to a preset communication control terminal for communication and real-time display.

[0006] Furthermore, the execution link switching verification method includes: Filter the broadband module parameters and narrowband module parameters from the precise communication status parameters; Extract signal strength, access delay, and response delay from the broadband module parameters to construct a broadband active parameter set; extract handshake response failure count, synchronization delay, and call occupancy status fields from the narrowband module parameters to construct a narrowband connection parameter set; The communication link activity index is calculated based on signal strength and response delay. The number of handshake response failures in the narrowband connection parameter group is compared with the preset handshake failure threshold, and the call occupancy status field is compared with the preset communication channel allocation table. If the number of handshake response failures is higher than the preset handshake failure threshold and the call occupancy status field is in an occupancy conflict state, then the narrowband is determined to be in a connection verification failure state. If the narrowband is in a connection verification failure state and the communication link activity index is lower than the preset activity tolerance threshold, it is judged as a link handover suspended state; if the narrowband is not in a connection verification failure state and the communication link activity index is lower than the link handover initiation threshold, it is judged as a link handover allowed state.

[0007] Furthermore, the method for generating the switching evaluation label includes: Extract the status fields for link switching suspended state and link switching allowed state respectively, bind the status field with the channel field of the corresponding communication channel and the judgment condition field, and output the switching evaluation label.

[0008] Furthermore, the method for performing communication quality prediction includes: Obtain the timing fields of the handover flag parameter set to construct time series data. The timing fields include signal strength, access delay, and response delay. Construct a sliding window to traverse the time series data, smooth the time series data in each sliding window, output the smoothed time series field and construct a quality trend curve; Calculate the first derivative of the quality trend curve to obtain the signal change rate of the time series field; if the signal change rate of each time series field shows a downward trend within the corresponding time period of the continuous sliding window, then the corresponding time period of the continuous sliding window is taken as the communication quality change period. After the period of sudden change in communication quality ends, continuously monitor whether the rate of signal change in the corresponding period of the subsequent continuous sliding window rebounds; If a rebound occurs and the rebound magnitude exceeds the preset recovery threshold, the communication link status is determined. If the communication link status does not switch at the same time, the rebound timestamp is recorded and marked as a traceability anomaly.

[0009] Furthermore, the methods by which the construction trend deviates from the characteristics include: The anomaly markers, the time interval corresponding to the communication quality mutation period, the rebound timestamp, the signal change rate, and the rebound amplitude are combined into a trend offset field. The trend fluctuation score is calculated based on the average rate of change of the signal and the rebound amplitude in the trend deviation field; the trend fluctuation score is mapped to the deviation level field. If the deviation level field is higher than the preset level threshold, a priority scheduling field is added; otherwise, no processing is performed. The trend offset field, deviation level field, and priority scheduling field are combined into a trend deviation feature.

[0010] Furthermore, the method for performing heterogeneous synchronization confirmation includes: Based on the trend deviation characteristics, determine whether there is a trend change. If there is, extract the deviation level field. If the deviation level field is higher than the preset level threshold and the priority scheduling field is active, then pause and delay this heterogeneous synchronization confirmation. When the deviation level field is lower than the preset level threshold, determine whether the handover evaluation label corresponds to the link handover allowed state. If it is in the link handover allowed state, read the current communication group number field and active status field of the broadband module parameter and the narrowband module parameter respectively. Set the confirmation period length, and compare the communication group number field of the broadband module parameters and the narrowband module parameters within the continuous period length; if the communication group number field is the same, it is determined to be a same group communication state; if the communication group number field is different, it is determined to be a different group communication state. If the communication is within the same group and all active status fields are in the running state, the first communication processing logic is executed; if the communication is in a different group, the second communication processing logic is executed, and the intra-group communication status field is output. The communication group number field, active status field, deviation level field, priority scheduling field, handover evaluation label, and intra-group communication status field are encapsulated into a fusion status code; the fusion status code is mapped to a specific value, which is the fusion consistency flag parameter.

[0011] Furthermore, the method of executing the first communication processing logic includes: Real-time monitoring of communication quality; based on a preset switching threshold, select the link with better communication quality as the primary communication link for audio playback and voice transmission, and set the other link as a backup monitoring link. During the call, the quality of the main communication link is continuously monitored. If the quality of the main communication link drops below that of the backup monitoring link and the difference exceeds the preset switching tolerance threshold, the audio playback source is switched to the backup monitoring link. In response to a user's active command, the user-specified broadband or narrowband link is set as the fixed primary communication link, and the automatic switching logic is paused. The method of executing the second communication processing logic includes: Detect the call timestamps of broadband and narrowband modules, and use the module that first initiates or receives the call as the main communication module to play voice data; Set another module to a secondary listening state, continuously receiving voice data but not playing audio; Speech recognition is performed on the voice data in the secondary monitoring state, and the data is converted into corresponding text data.

[0012] Furthermore, the methods for optimizing multi-terminal communication include: If the fusion consistency flag parameter indicates that the current communication link meets the handover conditions, obtain the handover target communication information and construct a handover broadcast information unit based on the handover target communication information; The handover stability coefficient of the handover broadcast information unit is calculated based on the rebound amplitude and the extreme difference of signal strength; the terminal handover impact parameter is obtained by weighted summation of the deviation level field and the trend fluctuation score. If the handover stability coefficient is higher than the preset stability threshold and the terminal handover impact parameter is greater than the broadcast trigger parameter, then the pre-handover broadcast process is executed. Set a broadcast scheduling window period, and input the switching broadcast information unit into the current communication link within the broadcast scheduling window period; set a broadcast information cache table to store the sent switching broadcast information units, and clear them after the existence time of the switching broadcast information unit exceeds the corresponding broadcast scheduling window period; The pre-switching broadcast process is encoded into a broadcast instruction sequence, and the broadcast instruction sequence and the corresponding switching broadcast information unit are combined into a multi-terminal communication broadcast.

[0013] Furthermore, the method for constructing the link communication strategy includes: The system matches and combines the fusion consistency flag parameter set with the switching flag parameter set to form a link communication data unit; it prioritizes and weights the link communication data unit based on preset broadband and narrowband communication weights, and integrates multi-terminal communication broadcasts into link communication module data; it converts the text data in the link communication module data into subtitles and merges them with the link communication module data to form complete link communication data; it matches the complete link communication data with the preset communication link selection template and outputs the link communication strategy.

[0014] A broadband and narrowband converged communication terminal, used to implement a broadband and narrowband converged communication method, includes: The data acquisition module collects communication status parameters and performs data cleaning to obtain accurate communication status parameters; The handover verification module performs link handover verification based on precise communication status parameters, generates handover evaluation tags based on the verification results, marks the precise communication status parameters, and obtains a handover tag parameter set. The trend prediction module predicts communication quality based on the handover marker parameter set and constructs trend deviation features based on the prediction results. The synchronization confirmation module performs heterogeneous synchronization confirmation on the handover flag parameter set based on trend deviation characteristics and handover evaluation labels, and outputs fused and consistent flag parameters. The multi-terminal optimization module optimizes multi-terminal communication based on the fusion and consistency flag parameters and outputs multi-terminal communication broadcasts. The strategy generation module constructs a link communication strategy by combining multi-terminal communication broadcast, merging consistent flag parameters and switching flag parameter sets, and sends the link communication strategy to a preset communication control terminal for communication and real-time display; the modules are connected to each other by wired and / or wireless means.

[0015] The technical effects and advantages of the broadband and narrowband converged communication method and terminal of this invention are as follows: By collecting and cleaning various communication status parameters from broadband and narrowband communication modules, a precise communication status parameter set was obtained. Based on this parameter set, link switching verification, communication quality prediction, and heterogeneous synchronization confirmation were performed, and multi-terminal communication optimization was achieved, resulting in a broadband-narrowband converged communication method. Compared with existing experience, by performing connection verification status judgment, the method avoids the situation where the main link is mistakenly released due to insufficient registration or conflicting occupancy of the secondary link, leading to communication interruption. By identifying periods of sudden changes in communication quality and introducing bounce monitoring and anomaly tracking, the method prevents missing the optimal switching window due to short-term link recovery. By performing continuous consistency comparison, the risk of misjudgment during switching caused by brief asynchrony in the states of heterogeneous communication modules is reduced. By constructing a pre-switching broadcast trigger mechanism, the normal sharing of switching intentions among multiple terminals is realized, reducing the probability of channel conflicts and resource contention in multi-terminal concurrent switching scenarios. This improves the accuracy and stability of broadband-narrowband converged communication and enhances the multi-terminal collaborative scheduling capability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a broadband and narrowband converged communication method according to the present invention; Figure 2 This is a schematic diagram of a broadband and narrowband converged communication terminal according to the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 Please see Figure 1 As shown in this embodiment, a broadband and narrowband converged communication method includes: S1. Collect communication status parameters and perform data cleaning to obtain accurate communication status parameters; S2. Perform link handover verification based on precise communication status parameters, generate handover evaluation labels based on the verification results, and mark the precise communication status parameters to obtain a handover label parameter set; S3. Perform communication quality prediction on the handover marker parameter set, and construct trend deviation features based on the prediction results; S4. Based on trend deviation characteristics and handover evaluation labels, heterogeneous synchronization confirmation of the handover flag parameter set is performed, and fused consistent flag parameters are output. S5. Optimize multi-terminal communication based on fusion and consistency flag parameters, and output multi-terminal communication broadcast; S6. Construct a link communication strategy by combining multi-terminal communication broadcast, fusion of consistent flag parameters and switching flag parameter sets, and send the link communication strategy to a preset communication control terminal for communication and real-time display.

[0019] In this embodiment, the communication status parameters include relevant parameters of the broadband communication module and the narrowband communication module, such as delay, RSSI signal strength and packet loss rate, as well as other relevant data that can reflect the communication status, such as frequency band number, signal-to-noise ratio and bit error rate, which appear during the communication process. Data cleaning is achieved by methods such as missing value filling and time alignment to obtain higher quality and more accurate communication status parameters.

[0020] The methods for performing link switching verification include: The system filters broadband and narrowband module parameters from the precise communication status parameters. It classifies the parameters by identifying their respective categories to obtain broadband and narrowband module parameters, thus avoiding the mixing of data from different communication modules in subsequent operations and improving data processing accuracy.

[0021] The signal strength, access delay, and response delay parameters from the broadband module are extracted to construct a broadband active parameter set; the number of handshake response failures, synchronization delay, and call occupancy status fields from the narrowband module are extracted to construct a narrowband connection parameter set. In this implementation, by extracting parameters closely related to the communication quality of the broadband module, parameters that can indicate the communication readiness state of the narrowband module are obtained to obtain the broadband active parameter set and the narrowband connection parameter set; the broadband active parameter set is used to reflect the continuity and transmission stability of the main link communication, and the narrowband connection parameter set is used to determine whether the secondary link communication has the ability to enter the access state.

[0022] The communication link activity index is calculated based on signal strength and response delay. The formula for calculating the communication link activity index is as follows: ;in This indicates the activity index of the communication link; This represents the normalized signal strength. This represents the normalized response delay; and These represent the weights of signal strength and response delay, respectively. The sum of the two weights is 1, and they can be adjusted based on the specific communication conditions.

[0023] The number of handshake response failures in the narrowband connection parameter group is compared with the preset handshake failure threshold, and the call occupancy status field is compared with the preset communication channel allocation table. The preset handshake failure threshold is set based on historical verification experience, and the comparison between the number of handshake response failures and the preset handshake failure threshold is used to confirm whether the narrowband as a secondary link has access capability. The call occupancy status field is verified by looking up a table, where the preset channel allocation table is set based on wireless communication related knowledge, including information reflecting the communication status such as communication status and occupancy conflict status.

[0024] If the number of handshake response failures exceeds the preset handshake failure threshold and the call occupancy status field is in an occupancy conflict state, then the narrowband is determined to be in a connection verification failure state. When the number of handshake response failures exceeds the preset handshake failure threshold and is in an occupancy conflict state, it means that the narrowband, as a secondary link, cannot meet the conditions for switching access under the current conditions, and is determined to be in a connection verification failure state.

[0025] If the narrowband is in a connection verification failure state and the communication link activity index is lower than the preset activity tolerance threshold, it is judged to be in a link switching suspension state. If the narrowband is already in a connection verification failure state, and the communication link activity index is also lower than the preset activity tolerance threshold set based on the communication specification, it means that the communication quality of the main link has also deteriorated. Therefore, this state is judged to be a link switching suspension state and is not suitable for performing a handover access. The activity tolerance threshold is the minimum standard for performing communication. If it is lower than this standard, it means that the communication quality is extremely poor.

[0026] If the narrowband is not in a connection verification failure state and the communication link activity index is lower than the link handover initiation threshold, it is judged as a link handover permitted state. If the narrowband is in a normal state and the communication link activity index does not exceed the link handover initiation threshold set based on the communication specification, it means that the communication link quality at this time is sufficient to perform handover access, so it is judged as a link handover permitted state. The link handover initiation threshold is the threshold that triggers link handover, indicating that the communication quality is poor enough and the secondary link can be used, so it is suitable to perform handover at this time.

[0027] Methods for generating switch evaluation labels include: The status fields of the link handover suspended state and the link handover allowed state are extracted separately. The status field is then bound to the channel field of the corresponding communication channel and the judgment condition field to output a handover evaluation label. The status field refers to the field information obtained by judgment to reflect the link handover suspended state and the link handover allowed state. The channel field refers to the field used to identify the corresponding communication channel collected in this embodiment. The judgment condition field refers to the field formed by encoding the threshold comparison process of the judgment status field. The three fields are integrated to obtain the handover evaluation label.

[0028] Methods for predicting communication quality include: The timing fields of the handover flag parameter set are obtained to construct time series data. The timing fields include signal strength, access delay and response delay. In this embodiment, the value of RSSI signal strength index, the time interval from initiating a communication request to the network responding to grant the link, and the round-trip time of a complete communication request and response are used as timing fields as the data basis for subsequent processing.

[0029] A sliding window is constructed to traverse the time series data. The time series data in each sliding window is smoothed, and the smoothed time series field is output and a quality trend curve is constructed.

[0030] The specific window length of the sliding window is set based on historical experience. The sliding window is used to traverse the time series data. In this embodiment, a filtering algorithm is used to smooth the time series data within each sliding window to eliminate interference and sudden changes in the data, and to perceive the communication quality change trend more stably. The smoothed time series field refers to the corresponding value of each dimension parameter in the original time series data after smoothing. A quality trend curve for each dimension is constructed based on each smoothed parameter.

[0031] The first derivative of the quality trend curve is calculated to obtain the signal change rate of the time series field, where the calculation of the first derivative is used to measure the change in communication quality.

[0032] If the rate of change of the signal for each time series field shows a downward trend within the corresponding period of the continuous sliding window, then the corresponding period of the continuous sliding window is regarded as the communication quality mutation period. If the quality trend curve corresponding to the parameter of each dimension in the time series data shows a decrease in the rate of change within the continuous sliding window, that is, the rate of change of the signal is continuously negative and gradually decreases, then the time interval formed by the corresponding continuous sliding window is determined as the communication quality mutation period. Here, "continuous" means two or more.

[0033] After the communication quality mutation period ends, the signal change rate is continuously monitored for rebound in the subsequent continuous sliding window period. The monitoring is conducted on the subsequent period after the communication quality mutation period to determine whether the signal change rate changes from negative to positive and continues to rise. If so, a rebound is determined. This is used to help identify pseudo-stationary situations.

[0034] If a rebound occurs and the rebound magnitude exceeds the preset recovery threshold, the communication link status is determined. If the communication link status does not switch at the same time, the rebound timestamp is recorded and marked as a traceability anomaly. The preset recovery threshold is set based on historical prediction experience. If a rebound occurs and the change magnitude during the rebound exceeds the preset recovery threshold, the communication link status is determined. If the communication link status remains unchanged and does not switch, it indicates that the rebound is a sudden change state where the link does not respond to the switch. Therefore, the timestamp of the current rebound is recorded and the anomaly is marked as a traceability anomaly.

[0035] Methods for constructing trend deviation features include: The anomaly markers, the time interval corresponding to the communication quality mutation period, the rebound timestamp, the signal change rate, and the rebound amplitude are combined into a trend offset field. Specifically, the anomaly markers, the time interval corresponding to the communication quality mutation period, the timestamp of the rebound, the signal change rate during the communication quality mutation period, and the rebound amplitude are combined into a structured dataset and encoded as a trend offset field.

[0036] The trend fluctuation score is calculated based on the average value of the signal change rate and the rebound amplitude in the trend offset field. In this embodiment, the trend fluctuation score is obtained by weighted summation of the average value of the signal change rate and the rebound amplitude. The average value of the signal change rate is taken as the absolute value. At the same time, the average value of the signal change rate and the rebound amplitude are adjusted to the same order of magnitude using a normalization algorithm, and weighted using weights set based on historical experience.

[0037] The trend fluctuation score is mapped to the deviation level field. If the deviation level field is higher than the preset level threshold, a priority scheduling field is added; otherwise, no action is taken.

[0038] The process involves comparing the trend fluctuation score with a threshold range constructed based on historical records. The results of the trend fluctuation score falling into different ranges are mapped to different levels to obtain a deviation level field. If the deviation level field is higher than the level threshold set based on historical experience, it indicates that the deviation is serious. A priority scheduling field is constructed to mark the trend deviation field at this time. If it does not exceed the level threshold, no priority scheduling field is added.

[0039] The trend offset field, deviation level field, and priority scheduling field are combined into a trend deviation feature. The trend offset field, deviation level field, and any possible priority scheduling field are packaged into a unified structure to form the trend deviation feature.

[0040] Methods for heterogeneous synchronization confirmation include: Based on the trend deviation characteristics, determine whether there is a trend change. If so, extract the deviation level field. If the deviation level field is higher than the preset level threshold and the priority scheduling field is active, then pause and delay this heterogeneous synchronization confirmation.

[0041] If the data in the switching marker dataset that belongs to broadband or narrowband has trend deviation characteristics, it indicates that there is a trend change. At this time, the deviation level field of the corresponding trend feature is extracted. If the value of the deviation level field is higher than the preset level threshold and the priority scheduling field is activated at the same time, it indicates that the stability of the corresponding communication link is poor. Therefore, the heterogeneous synchronization confirmation process is actively suspended and the process is postponed to prevent misjudgment distortion caused by trend fluctuations.

[0042] When the deviation level field is lower than the preset level threshold, determine whether the handover evaluation label corresponds to the link handover allowed state. If it is in the link handover allowed state, read the current communication group number field and active status field of the broadband module parameter and the narrowband module parameter respectively.

[0043] If the deviation level field does not exceed the limit, it is determined whether the handover assessment tag is in the link handover allowed state. If it is in the state, heterogeneous synchronization confirmation can be performed. The communication group number field configured in the broadband module and the communication group number field configured in the narrowband module are read respectively in the current communication state, and the active status flag of each module is collected at the same time. This is to ensure that the heterogeneous synchronization confirmation is performed under the premise that the module is working normally, and to exclude false alarms when the module is offline or restarted and not configured.

[0044] Set the confirmation period length, compare the communication group number fields of broadband module parameters and narrowband module parameters in the continuous period length, and set the time length of the confirmation period based on historical heterogeneous synchronization confirmation experience, and extract the corresponding communication group number fields of broadband and narrowband in the time segment formed by the continuous period length respectively.

[0045] If the communication group number field is consistent, it is determined to be a communication state within the same group; if the communication group number field is inconsistent, it is determined to be a communication state between different groups. If the communication is within the same group and all active status fields are in the running state, the first communication processing logic is executed; if the communication is in a different group, the second communication processing logic is executed, and the intra-group communication status field is output. If the communication group number field is consistent, it means that the two modules have entered the normal synchronization range, so the current state is marked as same group communication state; if there are inconsistent communication group number fields, it means that there is still a lack of synchronization, so the current state is marked as different group communication state.

[0046] If the communication is in the same group and all active status fields are running, the first communication processing logic is executed. If the communication is in a different group, the second communication processing logic is executed, and the intra-group communication status field is output. The intra-group communication status field is used to indicate whether the communication is in the same group or in a different group. The communication group number field, active status field, deviation level field, priority scheduling field, handover evaluation label, and intra-group communication status field are encapsulated into a fusion status code. The above comparison process includes the current valid communication group number field, the active working status flags of the two modules, the deviation level field, the pre-set priority scheduling field, the original handover evaluation label field, and the field indicating the communication status, all of which are encapsulated into a fusion status code and uniformly formed into a fusion communication status body.

[0047] The convergence status code is mapped to a specific numerical value, which is the convergence consistency flag parameter. The convergence status mapping table is set based on the communication specification. The convergence status code is matched with the mapping table, and the corresponding convergence status mapping value is output, which is the convergence consistency flag parameter.

[0048] The methods for executing the first communication processing logic include: The system monitors communication quality in real time and selects the link with better communication quality as the primary communication link for audio playback and voice transmission based on a preset switching threshold. The other link is set as a backup monitoring link. The communication quality is a quality score given by the quality evaluation logic set by the communication specification. At the same time, a switching threshold is set based on the specification, and the link with a quality score higher than the switching threshold is selected as the primary communication link. Audio playback and voice transmission are performed on this link, while the other link is used as a backup monitoring link.

[0049] During a call, the quality of the primary communication link is continuously monitored. If the quality of the primary communication link drops below that of the backup monitoring link and the difference exceeds the preset switching tolerance threshold, the audio playback source is switched to the backup monitoring link. In addition, during a call using audio and voice, the communication quality of the primary communication link is continuously monitored. If the quality score of the primary communication link is lower than that of the backup monitoring link and the difference is greater than the switching tolerance threshold set based on historical experience, the audio playback source is switched to the backup monitoring link, thus achieving seamless link switching.

[0050] In response to user-initiated commands, the system sets the user-specified broadband or narrowband link as the fixed primary communication link and suspends the automatic switching logic. Specifically, user-initiated commands allow users to specify broadband or narrowband as the fixed primary communication link and suspend the automatic seamless switching logic between links, thus meeting user needs.

[0051] The methods for executing the second communication processing logic include: The system detects the call timestamps of the broadband and narrowband modules and uses the module that initiates or receives the call first as the main communication module to play the voice data. In the case of inter-module communication, if either the broadband or narrowband module initiates or receives the call first, the corresponding module is used as the main communication module to decode and play the voice data.

[0052] The other module is set to a secondary listening state, continuously receiving voice data but not playing audio. Since one module is set as the primary communication module, the other module is set to a secondary listening state, only receiving and storing voice data, but not playing it, to prevent the audio streams of the two links from overlapping.

[0053] The speech data collected during secondary monitoring is processed by speech recognition and converted into corresponding text data. In this embodiment, the locally integrated speech recognition model is used to process the speech data collected during secondary monitoring and extract the text content of the data.

[0054] Methods for optimizing multi-terminal communication include: If the convergence consistency flag parameter indicates that the current communication link has the conditions for switching, the target communication information for switching is obtained, and a switching broadcast information unit is constructed based on the target communication information for switching. If the value of the convergence consistency flag parameter meets the judgment conditions of the switchable state in the mapping table, the target communication information for switching corresponding to the communication link of the terminal that needs to be switched is obtained, and a switching broadcast information unit is constructed based on the target communication information for switching.

[0055] The handover stability coefficient of the broadcast information unit is calculated based on the difference between the bounce amplitude and the extreme value of the signal strength. The extreme value of the signal strength refers to the difference between the minimum and maximum value of the signal strength. The handover stability coefficient is obtained by calculating the ratio of the bounce amplitude to the extreme value of the signal strength. It should be noted that the calculation is a dimensionless calculation. The closer the value is to 1, the better the link recovery status is. The closer it is to 0, the more the link is still in an abnormal state.

[0056] The terminal handover impact parameter is obtained by weighted summation of the deviation level field and the trend fluctuation score. The terminal handover impact parameter is obtained by normalizing the deviation level field and the trend fluctuation score in the trend deviation feature and then weighting them according to the set weights. It represents the load impact and scheduling priority of the current pre-handover terminal on the resource scheduling of the entire communication group and serves as one of the subsequent judgment conditions. The specific weights are set based on historical experience.

[0057] If the handover stability coefficient is higher than the preset stability threshold and the terminal handover impact parameter is greater than the broadcast trigger parameter, then the pre-handover broadcast procedure is executed. The stability threshold is set based on historical multi-terminal communication optimization records. If the handover stability coefficient is greater than the stability threshold and the terminal handover impact parameter is greater than the broadcast trigger parameter set based on the broadcast communication specification, it means that the communication link has sufficient rationality and necessity for handover, and the pre-handover broadcast procedure is allowed to be executed.

[0058] A broadcast scheduling window period is set, and the switching broadcast information unit is input into the current communication link within the broadcast scheduling window period. In the pre-switching broadcast process, a fixed-length broadcast scheduling window period is set. The duration of this window is set based on the specific communication resource allocation. Within this period, the control channel resources of the main communication module are invoked to broadcast the constructed switching broadcast information unit through the existing communication channel.

[0059] A broadcast information cache table is set up to store the sent handover broadcast information units, and the handover broadcast information unit is cleared after the storage time of the handover broadcast information unit exceeds the corresponding broadcast scheduling window period. In order to avoid the repeated parsing of broadcast information, a broadcast information cache table is constructed to store the sent handover broadcast information units, and the handover broadcast information unit is automatically cleared after the storage time of the handover broadcast information unit exceeds the broadcast scheduling window period corresponding to the unit, so as to prevent broadcast pollution of the next communication.

[0060] The pre-switching broadcast process is encoded into a broadcast instruction sequence, and the broadcast instruction sequence and the corresponding switching broadcast information unit are combined into a multi-terminal communication broadcast. The pre-switching broadcast process is encoded into a broadcast instruction sequence that can be recognized by a computer, and the sequence and the corresponding switching broadcast information unit are encapsulated into a data structure, which is the multi-terminal communication broadcast.

[0061] The methods for constructing and switching broadcast information units include: Extract the target communication module type, associated frequency band number, handover group number, and corresponding network status field from the target communication information. The target communication module type is used to characterize the communication module of the target terminal being handed over; the associated frequency band number is used to mark the scheduling home frequency band of the target communication, such as LTE or DMR; the handover group number provides the access logic of the target communication and the corresponding interface binding; the network status field indicates the current status of the target channel, such as idle, preempted, reserved, or unavailable.

[0062] Determine whether the priority scheduling field in the current convergence consistency flag parameter is of high priority. If it is of high priority, merge the priority scheduling field and the deviation level field into a status level field. If the priority situation corresponding to the priority scheduling field in the convergence consistency flag parameter is of high priority, then merge the two fields and map them into a status level field to indicate the urgency and recommended priority level of the current terminal's handover action.

[0063] The target communication module type is bound and mapped to the original communication link's communication module, and a switching identifier code is output. Specifically, the currently used communication module type is mapped to the target communication module type to be switched to, and a switching identifier code is constructed for marking this. For example, when the main path was originally DMR and the target is an LTE module, an identifier code is generated. As a jump path identifier in broadcast content, it helps the receiving end identify channel switching trends.

[0064] The data structure obtained by concatenating the associated frequency band number, handover group number, corresponding network status field, status level field, and handover identifier code is the handover broadcast information unit. The above field information is concatenated to form a data integration structure, which is the handover broadcast information unit, and serves as the unit data for communication between multiple terminals.

[0065] The methods for constructing link communication strategies include: The convergence consistency flag parameter is matched with the handover flag parameter set and combined into a link communication data unit. The convergence consistency flag parameter is matched with the relevant broadband and narrowband data in the handover flag parameter set and combined into a unified data unit, which is the link communication data unit.

[0066] The link communication data units are prioritized and weighted based on preset broadband and narrowband communication weights, and multi-terminal communication broadcasts are integrated and encapsulated into link communication module data. Broadband and narrowband communication weights are set based on specific communication requirements, and corresponding communication weights are assigned to the relevant fields in the link communication data units that belong to broadband and narrowband respectively. Then, the relevant parameters for executing the broadcast in the multi-terminal communication broadcast are introduced and combined with the link communication data units to form link communication module data that completely represents the communication process.

[0067] The text data in the link communication module data is converted into subtitles and merged with the link communication module data to form complete link communication data. The complete link communication data is then matched with a preset communication link selection template to output a link communication strategy. Specifically, the data converted from speech to text in the link communication module data is converted into subtitles and merged with the original link communication module data to form complete link communication data. This complete link communication data is then matched with a communication link selection template set based on communication specifications to output a suitable link communication strategy for use by the preset communication control terminal.

[0068] This embodiment obtains a precise communication status parameter set by collecting and cleaning various communication status parameters from broadband and narrowband communication modules. Based on this parameter set, link switching verification, communication quality prediction, and heterogeneous synchronization confirmation are performed, and multi-terminal communication optimization is achieved, resulting in a broadband-narrowband converged communication method. Compared with existing experience, by performing connection verification status judgment, the method avoids the situation where the main link is mistakenly released due to insufficient registration or conflicting occupancy of the secondary link, leading to communication interruption. By identifying periods of sudden changes in communication quality and introducing bounce monitoring and anomaly tracking, the method prevents missing the optimal switching window due to short-term link recovery. By performing continuous consistency comparison, the method reduces the risk of misjudgment of switching caused by brief asynchrony in the states of heterogeneous communication modules. By constructing a pre-switching broadcast trigger mechanism, the method enables normal sharing of switching intentions among multiple terminals, reducing the probability of channel conflicts and resource contention in multi-terminal concurrent switching scenarios. This improves the accuracy and stability of broadband-narrowband converged communication and enhances the multi-terminal collaborative scheduling capability.

[0069] Example 2 Please see Figure 2 As shown, parts not described in detail in this embodiment are described in Embodiment 1. A broadband and narrowband converged communication terminal is provided, including: The data acquisition module collects communication status parameters and performs data cleaning to obtain accurate communication status parameters; The handover verification module performs link handover verification based on precise communication status parameters, generates handover evaluation tags based on the verification results, marks the precise communication status parameters, and obtains a handover tag parameter set. The trend prediction module predicts communication quality based on the handover marker parameter set and constructs trend deviation features based on the prediction results. The synchronization confirmation module performs heterogeneous synchronization confirmation on the handover flag parameter set based on trend deviation characteristics and handover evaluation labels, and outputs fused and consistent flag parameters. The multi-terminal optimization module optimizes multi-terminal communication based on the fusion and consistency flag parameters and outputs multi-terminal communication broadcasts. The strategy generation module constructs a link communication strategy by combining multi-terminal communication broadcast, merging consistent flag parameters and switching flag parameter sets, and sends the link communication strategy to a preset communication control terminal for communication and real-time display; the modules are connected to each other by wired and / or wireless means.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0071] All formulas in this manual are dimensionless and calculated numerically. The formulas are derived from software simulations based on a large amount of collected data to obtain the most recent real-world results. The preset parameters and thresholds in the formulas are set by those skilled in the art according to the actual situation.

[0072] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A communication method integrating broadband and narrowband bandwidths, characterized in that, include: S1. Collect communication status parameters and perform data cleaning to obtain accurate communication status parameters; S2. Perform link handover verification based on precise communication status parameters, generate handover evaluation labels based on the verification results, and mark the precise communication status parameters to obtain a handover label parameter set; S3. Perform communication quality prediction on the handover marker parameter set, and construct trend deviation features based on the prediction results; S4. Based on trend deviation characteristics and handover evaluation labels, heterogeneous synchronization confirmation of the handover flag parameter set is performed, and fused consistent flag parameters are output. S5. Optimize multi-terminal communication based on fusion and consistency flag parameters, and output multi-terminal communication broadcast; S6. Construct a link communication strategy by combining multi-terminal communication broadcast, fusion of consistent flag parameters and switching flag parameter sets, and send the link communication strategy to a preset communication control terminal for communication and real-time display.

2. The broadband and narrowband converged communication method according to claim 1, characterized in that, The execution link switching verification method includes: Filter the broadband module parameters and narrowband module parameters from the precise communication status parameters; Extract signal strength, access delay, and response delay from the broadband module parameters to construct a broadband active parameter set; extract handshake response failure count, synchronization delay, and call occupancy status fields from the narrowband module parameters to construct a narrowband connection parameter set; The communication link activity index is calculated based on signal strength and response delay. The number of handshake response failures in the narrowband connection parameter group is compared with the preset handshake failure threshold, and the call occupancy status field is compared with the preset communication channel allocation table. If the number of handshake response failures is higher than the preset handshake failure threshold and the call occupancy status field is in an occupancy conflict state, then the narrowband is determined to be in a connection verification failure state. If the narrowband is in a connection verification failure state and the communication link activity index is lower than the preset activity tolerance threshold, it is judged as a link handover suspended state; if the narrowband is not in a connection verification failure state and the communication link activity index is lower than the link handover initiation threshold, it is judged as a link handover allowed state.

3. The broadband and narrowband converged communication method according to claim 2, characterized in that, The methods for generating handover evaluation labels include: Extract the status fields for link switching suspended state and link switching allowed state respectively, bind the status field with the channel field of the corresponding communication channel and the judgment condition field, and output the switching evaluation label.

4. The broadband and narrowband converged communication method according to claim 3, characterized in that, The methods for predicting communication quality include: Obtain the timing fields of the handover flag parameter set to construct time series data. The timing fields include signal strength, access delay, and response delay. Construct a sliding window to traverse the time series data, smooth the time series data in each sliding window, output the smoothed time series field and construct a quality trend curve; Calculate the first derivative of the quality trend curve to obtain the signal change rate of the time series field; if the signal change rate of each time series field shows a downward trend within the corresponding time period of the continuous sliding window, then the corresponding time period of the continuous sliding window is taken as the communication quality change period. After the period of sudden change in communication quality ends, continuously monitor whether the rate of signal change in the corresponding period of the subsequent continuous sliding window rebounds; If a rebound occurs and the rebound magnitude exceeds the preset recovery threshold, the communication link status is determined. If the communication link status does not switch at the same time, the rebound timestamp is recorded and marked as a traceability anomaly.

5. The broadband and narrowband converged communication method according to claim 4, characterized in that, The methods for constructing trend deviation features include: The anomaly markers, the time interval corresponding to the communication quality mutation period, the rebound timestamp, the signal change rate, and the rebound amplitude are combined into a trend offset field. The trend fluctuation score is calculated based on the average rate of change of the signal and the rebound amplitude in the trend deviation field; the trend fluctuation score is mapped to the deviation level field. If the deviation level field is higher than the preset level threshold, a priority scheduling field is added; otherwise, no processing is performed. The trend offset field, deviation level field, and priority scheduling field are combined into a trend deviation feature.

6. The broadband and narrowband converged communication method according to claim 5, characterized in that, The methods for heterogeneous synchronization confirmation include: Based on the trend deviation characteristics, determine whether there is a trend change. If there is, extract the deviation level field. If the deviation level field is higher than the preset level threshold and the priority scheduling field is active, then pause and delay this heterogeneous synchronization confirmation. When the deviation level field is lower than the preset level threshold, determine whether the handover evaluation label corresponds to the link handover allowed state. If it is in the link handover allowed state, read the current communication group number field and active status field of the broadband module parameter and the narrowband module parameter respectively. Set the confirmation period length, and compare the communication group number field of the broadband module parameters and the narrowband module parameters within the continuous period length; if the communication group number field is the same, it is determined to be a same group communication state; if the communication group number field is different, it is determined to be a different group communication state. If the communication is within the same group and all active status fields are in the running state, the first communication processing logic is executed; if the communication is in a different group, the second communication processing logic is executed, and the intra-group communication status field is output. The communication group number field, active status field, deviation level field, priority scheduling field, handover evaluation label, and intra-group communication status field are encapsulated into a fusion status code; the fusion status code is mapped to a specific value, which is the fusion consistency flag parameter.

7. The broadband and narrowband converged communication method according to claim 6, characterized in that, The method of executing the first communication processing logic includes: Real-time monitoring of communication quality; based on a preset switching threshold, select the link with better communication quality as the primary communication link for audio playback and voice transmission, and set the other link as a backup monitoring link. During the call, the quality of the main communication link is continuously monitored. If the quality of the main communication link drops below that of the backup monitoring link and the difference exceeds the preset switching tolerance threshold, the audio playback source is switched to the backup monitoring link. In response to a user's active command, the user-specified broadband or narrowband link is set as the fixed primary communication link, and the automatic switching logic is paused. The method of executing the second communication processing logic includes: Detect the call timestamps of broadband and narrowband modules, and use the module that first initiates or receives the call as the main communication module to play voice data; Set another module to a secondary listening state, continuously receiving voice data but not playing audio; Speech recognition is performed on the voice data in the secondary monitoring state, and the data is converted into corresponding text data.

8. The broadband and narrowband converged communication method according to claim 7, characterized in that, The methods for optimizing multi-terminal communication include: If the fusion consistency flag parameter indicates that the current communication link meets the handover conditions, obtain the handover target communication information and construct a handover broadcast information unit based on the handover target communication information; The handover stability coefficient of the handover broadcast information unit is calculated based on the rebound amplitude and the extreme difference of signal strength; the terminal handover impact parameter is obtained by weighted summation of the deviation level field and the trend fluctuation score. If the handover stability coefficient is higher than the preset stability threshold and the terminal handover impact parameter is greater than the broadcast trigger parameter, then the pre-handover broadcast process is executed. Set a broadcast scheduling window period, and input the switching broadcast information unit into the current communication link within the broadcast scheduling window period; set a broadcast information cache table to store the sent switching broadcast information units, and clear them after the existence time of the switching broadcast information unit exceeds the corresponding broadcast scheduling window period; The pre-switching broadcast process is encoded into a broadcast instruction sequence, and the broadcast instruction sequence and the corresponding switching broadcast information unit are combined into a multi-terminal communication broadcast.

9. A broadband and narrowband converged communication method according to claim 8, characterized in that, The methods for constructing the link communication strategy include: The system matches and combines the fusion consistency flag parameter set with the switching flag parameter set to form a link communication data unit; it prioritizes and weights the link communication data unit based on preset broadband and narrowband communication weights, and integrates multi-terminal communication broadcasts into link communication module data; it converts the text data in the link communication module data into subtitles and merges them with the link communication module data to form complete link communication data; it matches the complete link communication data with the preset communication link selection template and outputs the link communication strategy.

10. A broadband and narrowband converged communication terminal, used to implement the broadband and narrowband converged communication method according to any one of claims 1-9, characterized in that, include: The data acquisition module collects communication status parameters and performs data cleaning to obtain accurate communication status parameters; The handover verification module performs link handover verification based on precise communication status parameters, generates handover evaluation tags based on the verification results, marks the precise communication status parameters, and obtains a handover tag parameter set. The trend prediction module predicts communication quality based on the handover marker parameter set and constructs trend deviation features based on the prediction results. The synchronization confirmation module performs heterogeneous synchronization confirmation on the handover flag parameter set based on trend deviation characteristics and handover evaluation labels, and outputs fused and consistent flag parameters. The multi-terminal optimization module optimizes multi-terminal communication based on the fusion and consistency flag parameters and outputs multi-terminal communication broadcasts. The strategy generation module constructs a link communication strategy by combining multi-terminal communication broadcast, merging consistent flag parameters and switching flag parameter sets, and sends the link communication strategy to a preset communication control terminal for communication and real-time display; the modules are connected to each other by wired and / or wireless means.

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