A full-link optimal emergency response method and device

Abstract

The present application provides an emergency response method and device with optimal full link, which belongs to the field of emergency communication and is used to solve the problem that the timeliness and reliability of the emergency response process in related technologies are difficult to ensure. In this method and system, according to the link status of the direct communication link between the sender and the receiver and the server, it is specifically determined how to select and construct the full communication link between the sender and the receiver, so that the full communication link between the sender and the receiver can be automatically constructed to ensure the timeliness and reliability of the entire communication link.

Description

Technical Field

[0001] The present application relates to the field of emergency communications, and in particular to a full-link optimal emergency response method and system. Background Art

[0002] When a natural disaster occurs, general means of communication may fail. In order to respond to natural disasters and ensure the timely transmission of information and command and coordination when natural disasters occur, emergency communication technology is needed. The call-response (i.e., call and answer) process is an important part of emergency communication. Ensuring the timeliness and reliability of the call-response process is conducive to better responding to natural disasters. Summary of the invention

[0003] The present application provides a full-link optimal emergency response method and system, which is conducive to ensuring the timeliness and reliability of emergency response.

[0004] In the first aspect, the present application provides a full-link optimal emergency call response method. Applied to a system consisting of a server and multiple terminal devices, the terminal devices include a sender and a receiver of communication information to be transmitted, and the method includes:

[0005] Obtaining the link status of the direct communication link between the sender and the receiver and the server, wherein the link status is connection allowed or connection failed;

[0006] Assume that the sender is A and the receiver is B. The corresponding direct communication link allows connection to be Y and cannot be connected to be F. Then

[0007] If the direct communication links corresponding to A and B are both Y, then A and B are substituted into the pre-built link selection model, and the selected communication link obtained is the full communication link between A and B;

[0008] If the direct communication links corresponding to A and B are both F, then A' and B' are determined in the terminal device respectively, and A and A' as well as B and B' are respectively substituted into the pre-constructed link self-organizing model to obtain two self-organizing communication links, and A' and B' are substituted into the link selection model to obtain the selected communication link, and the selected communication link and the two self-organizing communication links constitute a full communication link;

[0009] If the direct communication link corresponding to A is Y and the direct communication link corresponding to B is F, then determine B' in the terminal device, substitute B and B' into the link self-organizing model to obtain the self-organizing communication link, substitute A and B' into the link selection model to obtain the selected communication link, and the selected communication link and the self-organizing communication link constitute a full communication link;

[0010] If the direct communication link corresponding to A is F and the direct communication link corresponding to B is Y, then A' is determined in the terminal device, and A and A' are substituted into the link self-organizing model to obtain the self-organizing communication link, and A' and B are substituted into the link selection model to obtain the selected communication link. The selected communication link and the self-organizing communication link constitute a full communication link.

[0011] By adopting the above technical solution, the entire communication link between the sender and the receiver can be automatically constructed to ensure the timeliness and reliability of the entire communication link.

[0012] Furthermore, the method for determining A' and / or B' in the terminal device includes:

[0013] Determine the terminal device that allows the direct communication link between servers as the candidate terminal,

[0014] If the direct communication links corresponding to A and B are both F, the server determines position X1 according to A's historical position data, determines X2 according to B's historical position data, determines the connecting line segment between X1 and X2, determines m alternative terminals among the alternative terminals whose sum of distance to A and distance to the connecting line segment is the smallest, and the i-th alternative terminal is Ai, and determines m alternative terminals among the alternative terminals whose sum of distance to B and distance to the connecting line segment is the smallest, and the i-th alternative terminal is Bi, then the group of Ai and Bi with the smallest sum of lengths of AAi, AiBi, and BBi are determined to be A' and B' respectively.

[0015] Furthermore, the link self-organizing model includes:

[0016] Taking the first device and the second device as input, the direct communication link corresponding to the first device is Y, and the direct communication link corresponding to the second device is F;

[0017] Acquire geographic location information of the first device, and determine calculated location information according to historical location information of the second device;

[0018] Determine a network area range according to the geographical location information and the calculated location information, wherein the network area range includes a connection line from the geographical location range to the calculated location information and any distance connection line or a radiation point whose calculated location information is a preset distance;

[0019] The first device is triggered to broadcast a link self-organizing request carrying the calculated location information, the networking area range and the device identification of the second device until a self-organizing communication link from the first device to the second device is formed.

[0020] Furthermore, the link selection model includes:

[0021] Acquire distance information between the first device and the second device and a first communication link and a second communication link, wherein the first communication link includes a public communication network and / or a satellite communication network, and the second communication link includes an ad hoc communication network based on a plurality of terminal devices;

[0022] determining a second communication duration of the second communication link according to the distance information;

[0023] The first communication link or the second communication link is determined as the selected communication link according to the second communication duration, the pre-acquired first communication duration of the first communication link, and the pre-acquired urgency data of the communication information to be transmitted.

[0024] Further, determining the first communication link or the second communication link as the selected communication link according to the second communication duration, the pre-acquired first communication duration of the first communication link, and the pre-acquired urgency data of the communication information to be transmitted includes:

[0025] When the urgency data is not higher than the urgency threshold, selecting the first communication link for communication;

[0026] When the urgency data is higher than the urgency threshold, if the first communication duration is not greater than a first preset multiple of the second communication duration, the first communication link is selected, and the first preset multiple is greater than 1; if the first communication duration is greater than a second preset multiple of the second communication duration, the second communication link is selected, and the second preset multiple is greater than the first preset multiple; if the first communication duration is greater than the first preset multiple of the second communication duration and not greater than the second preset multiple of the second communication duration, the preference data of the second communication link is calculated, and the second communication link is selected when the preference data is higher than the preference threshold, otherwise the first communication link is selected, and the preference data is positively correlated with the urgency data and the first communication duration, and negatively correlated with the second communication duration.

[0027] Furthermore, the method for obtaining the urgency data includes:

[0028] Suppose the interval between the sending timestamp carried by the communication information to be transmitted and the current time is , the importance level carried is p, there are n data description tags carried, and the urgency coefficient of pre-acquisition relative to the i-th data description tag is , the urgency data is z, then , where is a preset constant greater than zero.

[0029] Furthermore, the calculation method of the preference data includes:

[0030] Assume the first communication duration is , the second communication duration is , the preferred degree data is y, then , where q is the pre-acquired link importance coefficient between the sender and the receiver, m is the amount of communication information to be transmitted, and x is the distance information. All are preset constants greater than zero.

[0031] Furthermore, the method for obtaining the urgency coefficient of the data description tag includes:

[0032] A label coefficient comparison table is pre-constructed for each data description label, and the data description label is substituted into the label coefficient comparison table to obtain the emergency coefficient.

[0033] Furthermore, the method for obtaining the link importance coefficient includes:

[0034] Acquire first location information of the first device and second location information of the second device;

[0035] Connect the first position information and the second position information to determine an ideal link trajectory;

[0036] Based on the pre-built emergency zoning map, determine the divided areas through which the ideal link trajectory passes;

[0037] The link importance coefficient is determined based on a zone importance coefficient preset relative to each divided area.

[0038] In the second aspect, the present application provides a full-link optimal emergency call response system. The system includes a server and a terminal device, the terminal device includes a sender and a receiver of communication information to be transmitted, and the server applies any one of the methods described in the first aspect above.

[0039] In summary, this application at least has the following beneficial effects:

[0040] A full-link optimal emergency response method and system are provided, which can automatically determine the full communication link between the sender and the receiver according to the specific situation, and ensure the timeliness and reliability of the emergency response.

[0041] It should be understood that the contents described in the Summary of the Invention are not intended to limit the key or important features of the embodiments of the present application, nor are they intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and other features, advantages and aspects of the embodiments of the present application will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0043] Figure 1A block diagram of a full-link optimal emergency response system in an embodiment of the present application is shown;

[0044] Figure 2 A flowchart of a full-link optimal emergency call response method in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] The present application provides a full-link optimal emergency response method and system, which can intelligently determine the full communication link between the sender and the receiver according to the specific link status, so as to ensure the timeliness and reliability of the emergency response process.

[0048] On the first aspect, the present application provides an emergency response system with optimal full-link.

[0049] Figure 1 A block diagram of a full-link optimal emergency response system in an embodiment of the present application is shown.

[0050] Reference Figure 1 The system includes a server 110 and multiple terminal devices 120 (only one is shown in the figure). In a specific emergency command scenario, there are multiple levels of command centers and protected objects (residents), wherein the server 110 is used by the top-level command center, and the terminal device 120 is used by other levels of command centers and protected objects.

[0051] The terminal device 120 has a first communication module and a second communication module, wherein the first communication module includes a public network communication unit and a satellite communication unit, the public network communication unit is such as a 4G module, a 5G module, etc., the satellite communication unit is such as a Beidou module, etc., and the second communication module is an ad hoc network communication module, including such as a Bluetooth module, a WiFi module, a lora communication module, etc. The terminal device 120 can be directly connected to the server 110 using the first communication module, and can be connected to other terminal devices 120 within a certain range using the second communication module.

[0052] The terminal device 120 also includes basic display functions, sound pickup functions, and positioning functions, and may also include other functions necessary for emergency situations, such as waterproof and shockproof functions, communication encryption functions, and solar charging functions. In short, the terminal device 120 can support calls between different terminal devices 120 or between the server 110 and the terminal device 120.

[0053] The link selection of the call response process of the system can be specifically determined by a method executed in the server 110. Of course, if the computing power allows, some steps of the method can also be executed by the terminal device 120. The method is introduced by the disclosure of the second aspect of the present application.

[0054] In the second aspect, the present application discloses a full-link optimal emergency call response method. The method can be Figure 1 The server 110 executes in.

[0055] Figure 2 A flowchart of a full-link optimal emergency call response method in an embodiment of the present application is shown.

[0056] Reference Figure 2 , the method specifically comprises the following steps:

[0057] S210: Acquire the link status of the direct communication link between the sender and the receiver and the server 110 .

[0058] The sender refers to the terminal device 120 that sends the communication information, and the receiver refers to the sender's target terminal device 120. In the emergency call-response process, both the caller and the responder may call and respond, so the sender and the receiver only refer to the role of the terminal device 120 in a call or response process, and the entire communication process can be understood by analogy.

[0059] In the method of this step, the link status is connection allowed or connection failed.

[0060] A direct communication link refers to a communication link that does not pass through other terminal devices 120 and is implemented by relying on the first communication module. Allowing connection means that the terminal device 120 can normally connect to the server 110 through the first communication module. In emergency command scenarios, the ground station of public network communication and satellite communication may be damaged, making it difficult for the terminal device 120 to connect to the server 110 through the direct communication link. At this time, the link status of the direct communication link is unable to connect.

[0061] S220: Determine the full communication link between the sender and the receiver according to the link status of the direct communication link between the sender and the receiver and the server 110 and the pre-built link self-organization model and link selection model.

[0062] The method of this step specifically includes: assuming that the sender is A, the receiver is B, the corresponding direct communication link allows connection to be Y, and cannot connect to be F, then

[0063] If the direct communication links corresponding to A and B are both Y, then A and B are substituted into the pre-built link selection model, and the selected communication link obtained is the full communication link between A and B;

[0064] If the direct communication links corresponding to A and B are both F, then A' and B' are determined in the terminal device 120, and A and A' as well as B and B' are respectively substituted into the pre-constructed link self-grouping model to obtain two self-grouping communication links, and A' and B' are substituted into the link selection model to obtain a selected communication link, and the selected communication link and the two self-grouping communication links constitute a full communication link;

[0065] If the direct communication link corresponding to A is Y and the direct communication link corresponding to B is F, then determine B' in the terminal device 120, substitute B and B' into the link self-organizing model to obtain the self-organizing communication link, substitute A and B' into the link selection model to obtain the selected communication link, and the selected communication link and the self-organizing communication link constitute the full communication link;

[0066] If the direct communication link corresponding to A is F and the direct communication link corresponding to B is Y, then A' is determined in the terminal device 120, and A and A' are substituted into the link self-organizing model to obtain the self-organizing communication link, and A' and B are substituted into the link selection model to obtain the selected communication link. The selected communication link and the self-organizing communication link constitute a full communication link.

[0067] In the method of this step, the method of determining A' and / or B' in the terminal device 120 includes: determining that the terminal device 120 that is allowed to connect to the direct communication link between the server 110 is an alternative terminal, if the direct communication links corresponding to A and B are both F, the server 110 determines the position X1 according to the historical position data of A, determines X2 according to the historical position data of B, determines the connecting line segment of X1 and X2, determines the m alternative terminals with the smallest sum of the distance to A and the distance to the connecting line segment among the alternative terminals, the i-th alternative terminal is Ai, and determines the m alternative terminals with the smallest sum of the distance to B and the distance to the connecting line segment among the alternative terminals, the i-th alternative terminal is Bi, then determine that a group of Ai and Bi with the smallest sum of the lengths of AAi, AiBi, and BBi are A' and B' respectively.

[0068] The link self-organizing model is used to determine the self-organizing communication link required for communication between two terminal devices 120, and the self-organizing communication link is realized by relying on multiple terminal devices 120 as relays. The link self-organizing model specifically includes: taking the first device and the second device as input, the direct communication link corresponding to the first device is Y, and the direct communication link corresponding to the second device is F; obtaining the geographic location information of the first device, and determining a calculated location information based on the historical location information of the second device; determining a group of network area ranges based on the geographic location information and the calculated location information, and the network area range includes a connection line from the geographic location range to the calculated location information and any radiation point with a preset distance from the connection line or the calculated location information; triggering the first device to broadcast a link self-organizing request carrying the calculated location information, the networking area range and the device identifier of the second device until a self-organizing communication link from the first device to the second device is formed.

[0069] Specifically, the method for determining the calculated location information based on the historical location information includes: determining the two historical location information of the second device when it communicated with the server 110 for the last two times, calculating the moving speed of the second device based on the distance and time interval between the two historical location information, determining the historical location information of the second device when it communicated with the server 110 for the last time as the calculated location information, and determining the time from the current moment to the last communication of the second device as the lost connection time, calculating the specified multiple of the product of the moving speed and the lost connection time as the radiation radius, the specified multiple is, for example, 1.5 times or 2 times. In this way, the possible activity range of the second device can be determined as a circular area with the calculated location information as the center and the radiation radius as the radius.

[0070] A specific networking area range is: the overall shape is a composite shape of a rectangle and a semicircle; one side of the rectangle is a line segment with the geographic location of the first device as the midpoint, perpendicular to the connecting line of the geographic location information of the first device and the calculated location information of the second device, and the length is twice the radiation radius; the other side is parallel to the connecting line of the geographic location information of the first device and the calculated location information of the second device and the length is equal to the connecting line, so that the rectangular part can be determined; the semicircular part has the calculated location information of the second device as the center and the radiation radius as the radius.

[0071] In the actual communication link self-organization process, the first device can initiate a communication link self-organization request, and the communication link self-organization request carries the networking area range, calculated location information and the device identification of the second device. The first device broadcasts the link self-organization request externally, and the terminal device 120 within the networking area receives the link self-organization request and cooperates to continue broadcasting externally, so that the link self-organization request spreads within the networking area until the second device is found. The second device transmits back a feedback signal carrying its actual location and the geographic location information of the first device. When the feedback signal is transmitted back, each terminal device 120 that passes through a relay records the device identification and location identification of a relay, so that when the first device is finally transmitted, the first device can select the shortest link as the self-organizing communication link. Of course, several other links can also be selected as backup links for the self-organizing communication link.

[0072] In the actual communication link self-organization process, the server 110 can assist and cooperate to make the link self-organization more efficient. For example, the server 110 can determine all the terminal devices 120 in the networking area with a state of Y, and trigger a terminal device 120 within the range with the calculated location information as the center and the radiation radius as the radius to search for the second device, so that the second device can be discovered by the server 110 as soon as possible. The server 110 can also pre-select a terminal device 120 in the state of Y that is closest to the calculated location information as a virtual target device, and calculate whether a communication link from the first device to the virtual target device can be constructed based on all the terminal devices 120 in the state of Y within the networking area. If so, the networking communication link is sent to the first device for reference by the first device.

[0073] If the second device is not found after executing the link self-organization work for a period of time, the radiation radius can be appropriately expanded.

[0074] Based on the above content, it is basically possible to realize directional and regional broadcast link self-organizing requests in the terminal device 120 self-organizing network. During the link self-organizing period, the server 110 cooperates to achieve a more efficient establishment of self-organizing communication links.

[0075] When both terminal devices 120 are Y, the communication between the two terminal devices 120 can be achieved through the server 110 or through the self-organizing network of the terminal devices 120. The specific method to be used can be determined by using the link selection model.

[0076] The link selection model specifically includes:

[0077] Acquire distance information between the first device and the second device and a first communication link and a second communication link, wherein the first communication link includes a public communication network and / or a satellite communication network, and the second communication link includes an ad hoc communication network based on a plurality of terminal devices 120;

[0078] determining a second communication duration of the second communication link according to the distance information;

[0079] The first communication link or the second communication link is determined as the selected communication link according to the second communication duration, the pre-acquired first communication duration of the first communication link, and the pre-acquired urgency data of the communication information to be transmitted.

[0080] In the link selection model, the first communication link is implemented by relying on the public network or satellite communication network, and the influence of the communication distance can be basically ignored, so it can be considered that the first communication duration can be basically predetermined, that is, pre-acquired. The second communication duration refers to the duration required for the second communication link to transmit a test packet of a unit size. The second communication link is implemented by relying on the second communication module of several terminal devices 120 between the sender and the receiver. The transmission process of the test packet is the same as the actual communication information transmission process. After the terminal device 120 of the previous node on the second communication link receives the test packet, it processes and identifies the test packet and forwards it to the terminal device 120 of the next node. Since the test packet and the actual communication information are both small, it can be considered that the transmission time between nodes can be ignored, and the main time consumed is in the process of processing, identifying and forwarding. At the same time, the communication distance of the second communication module is limited. Therefore, if the distance information between the sender and the receiver is farther, the more terminal devices 120 of the intermediate nodes are required, and the more processing, identification and forwarding processes are required, the longer the second communication duration is considered. Therefore, it can be considered that the second communication duration is proportional to the distance information city. The larger the distance information, the longer the second communication duration.

[0081] Before the communication link is selected, the communication information to be transmitted has been determined, so the sending timestamp, importance level and data description tag carried by the communication information to be transmitted can be obtained. Therefore, the method for obtaining the urgency data includes: assuming that the interval between the sending timestamp carried by the communication information to be transmitted and the current time is , the importance level carried is p, there are n data description tags carried, and the urgency coefficient of pre-acquisition relative to the i-th data description tag is , the urgency data is z, then , where is a preset constant greater than zero.

[0082] Based on the foregoing, determining the first communication link or the second communication link as the selected communication link according to the second communication duration, the pre-acquired first communication duration of the first communication link, and the pre-acquired urgency data of the communication information to be transmitted specifically includes:

[0083] When the urgency data is not higher than the urgency threshold, selecting the first communication link for communication;

[0084] When the urgency data is higher than the urgency threshold, if the first communication duration is not greater than the first preset multiple of the second communication duration, the first communication link is selected, and the first preset multiple is greater than 1; if the first communication duration is greater than the second preset multiple of the second communication duration, the second communication link is selected, and the second preset multiple is greater than the first preset multiple; if the first communication duration is greater than the first preset multiple of the second communication duration and not greater than the second preset multiple of the second communication duration, the preference data of the second communication link is calculated, and the second communication link is selected when the preference data is higher than the preference threshold, otherwise the first communication link is selected, and the preference data is positively correlated with the urgency data and the first communication duration, and negatively correlated with the second communication duration. Generally speaking, the first preset multiple is 1.2, and the second preset multiple is 2.5.

[0085] In the above content, the calculation method of the preference data specifically includes: assuming that the first communication duration is , the second communication duration is , the preferred degree data is y, then , where q is the pre-acquired link importance coefficient between the sender and the receiver, m is the amount of communication information to be transmitted, and x is the distance information. All are preset constants greater than zero.

[0086] The method for obtaining the urgency coefficient of the data description label specifically includes: pre-constructing a label coefficient comparison table for each data description label, substituting the data description label into the label coefficient comparison table, and obtaining the urgency coefficient. Specifically, the data description label may include an attribute label or a magnitude label. The attribute label is, for example, a data format label, and the magnitude label is, for example, a data volume. All possible data description labels exist in the label coefficient comparison table. If the data description label is an attribute label, the corresponding urgency coefficient is unique and determined. If the data description label is a magnitude label, different urgency coefficients are taken for different magnitude value ranges, so that the urgency coefficient of each data description label can be determined. It should be understood that in the constructed label coefficient comparison table, the urgency coefficient corresponding to each data description label is less than 1 and greater than 0. The comparison relationship between the data description label and the urgency coefficient depends on the data experience. If the urgency reflected by the data description label is higher, the corresponding urgency coefficient is larger.

[0087] The method for obtaining the link importance coefficient specifically includes: obtaining the first location information of the first device and the second location information of the second device; connecting the first location information and the second location information to determine the ideal link trajectory; determining the division area through which the ideal link trajectory passes based on the pre-constructed emergency zoning map; determining the link importance coefficient based on the preset division importance coefficient relative to each division area. The emergency zoning map is determined relative to the map of the disaster coverage area. The emergency zoning map divides the disaster coverage area into multiple areas, each area corresponds to a division importance coefficient, the first location information and the second location information can both determine a clear point on the map of the disaster coverage area, and the line segment connecting the two is the ideal link trajectory. The ideal link trajectory can be determined on the map of the disaster coverage area, and the area passed can also be determined. After passing through an area, a corresponding division importance coefficient is calculated, and the division importance coefficient of the same area is not repeated, so that the cumulative value of all division importance coefficients can be determined, that is, the link importance coefficient can be determined. Of course, the link importance coefficient can also be equal to the maximum value, minimum value, median value or average value of the division importance coefficients of all areas passing through.

[0088] In this way, the link selection model can realize the selection of the first communication link and the second communication link. This method only selects the communication link, the first communication link is a clear and known communication link, and the second communication link may have a preconfigured self-organizing communication link or may not have a preconfigured self-organizing communication link, and the server 110 needs to intervene to trigger the construction of the self-organizing communication link between the first device and the second device.

[0089] It should be understood that the link selection model is an interpretable machine learning algorithm, in which the parameters can be trained based on the timeliness feedback of the communication. The parameters that can be trained are, for example, , label coefficient comparison table, preset duration, urgency threshold, first preset multiple, second preset multiple, etc. During long-term use, the link selection model can be trained so that the link selection model can select communication links more intelligently and reasonably, which is conducive to further ensuring the timeliness and reliability of the entire call response process.

[0090] In summary, this method can select and construct a full communication link between the sender and the receiver. The determination of the specific components of the communication link depends on the specific public network / satellite communication network and the device ad hoc network, the actual location of the sender and the receiver, and the specific situation of the data to be transmitted, so that the full communication link can more specifically meet the needs of timely and efficient emergency response. After the full communication link is constructed, the full communication link can be used to transmit the communication information to be transmitted. Of course, in order to save processing efficiency, the full communication link determined by this method is generally maintained for a certain period of time.

[0091] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the embodiments of the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0092] In summary, this application at least has the following beneficial effects:

[0093] A full-link optimal emergency response method and system are provided, which can automatically determine the full communication link between the sender and the receiver according to the specific situation, and ensure the timeliness and reliability of the emergency response.

[0094] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the aforementioned disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

Claims

1. A full-link optimal emergency response method, characterized in that: Applied to a system consisting of a server (110) and a plurality of terminal devices (120), the terminal devices (120) comprising a sender and a receiver of communication information to be transmitted, the method comprising: Acquiring the link status of the direct communication link between the sender and the receiver and the server (110), wherein the link status is connection allowed or connection impossible; Assume that the sender is A and the receiver is B. The corresponding direct communication link allows connection to be Y and cannot be connected to be F. Then If the direct communication links corresponding to A and B are both Y, then A and B are substituted into the pre-built link selection model, and the selected communication link obtained is the full communication link between A and B; If the direct communication links corresponding to A and B are both F, then A' and B' are determined in the terminal device (120), and A and A' as well as B and B' are respectively substituted into the pre-constructed link self-organizing model to obtain two self-organizing communication links, and A' and B' are substituted into the link selection model to obtain a selected communication link, and the selected communication link and the two self-organizing communication links constitute a full communication link; If the direct communication link corresponding to A is Y and the direct communication link corresponding to B is F, then determining B' in the terminal device (120), and substituting B and B' into the link self-organizing model to obtain the self-organizing communication link, substituting A and B' into the link selection model to obtain the selected communication link, and the selected communication link and the self-organizing communication link constitute a full communication link; If the direct communication link corresponding to A is F and the direct communication link corresponding to B is Y, then A' is determined in the terminal device (120), and A and A' are substituted into the link self-organizing model to obtain the self-organizing communication link, and A' and B are substituted into the link selection model to obtain the selected communication link, and the selected communication link and the self-organizing communication link constitute a full communication link; The method for determining A' and / or B' in a terminal device (120) comprises: Determine that the terminal device (120) that is allowed to connect to the direct communication link between the servers (110) is a candidate terminal, If the direct communication links corresponding to A and B are both F, the server (110) determines the position X1 according to the historical position data of A, determines X2 according to the historical position data of B, determines the connecting line segment of X1 and X2, determines m candidate terminals with the smallest sum of distances to A and distances to the connecting line segment among the candidate terminals, the i-th candidate terminal is Ai, and determines m candidate terminals with the smallest sum of distances to B and distances to the connecting line segment among the candidate terminals, the i-th candidate terminal is Bi, and determines a group of Ai and Bi with the smallest sum of lengths of AAi, AiBi, and BBi, which are A' and B' respectively; The link selection model includes: Acquire distance information between the first device and the second device as well as a first communication link and a second communication link, wherein the first communication link comprises a public communication network and / or a satellite communication network, and the second communication link comprises an ad hoc communication network relying on a plurality of terminal devices (120); determining a second communication duration of the second communication link according to the distance information; The first communication link or the second communication link is determined as the selected communication link according to the second communication duration, the pre-acquired first communication duration of the first communication link, and the pre-acquired urgency data of the communication information to be transmitted.

2. The method according to claim 1, characterized in that The link self-organizing model includes: Taking the first device and the second device as input, the direct communication link corresponding to the first device is Y, and the direct communication link corresponding to the second device is F; Acquire geographic location information of the first device, and determine calculated location information according to historical location information of the second device; Determine a network area range according to the geographical location information and the calculated location information, wherein the network area range includes a connection line from the geographical location range to the calculated location information and any distance connection line or a radiation point whose calculated location information is a preset distance; The first device is triggered to broadcast a link self-organizing request carrying the calculated location information, the networking area range and the device identification of the second device until a self-organizing communication link from the first device to the second device is formed.

3. The method according to claim 1, characterized in that The determining, according to the second communication duration, the pre-acquired first communication duration of the first communication link, and the pre-acquired urgency data of the communication information to be transmitted, of the first communication link or the second communication link as the selected communication link comprises: When the urgency data is not higher than the urgency threshold, selecting the first communication link for communication; When the urgency data is higher than the urgency threshold, if the first communication duration is not greater than a first preset multiple of the second communication duration, the first communication link is selected, and the first preset multiple is greater than 1; if the first communication duration is greater than a second preset multiple of the second communication duration, the second communication link is selected, and the second preset multiple is greater than the first preset multiple; if the first communication duration is greater than the first preset multiple of the second communication duration and not greater than the second preset multiple of the second communication duration, the preference data of the second communication link is calculated, and the second communication link is selected when the preference data is higher than the preference threshold, otherwise the first communication link is selected, and the preference data is positively correlated with the urgency data and the first communication duration, and negatively correlated with the second communication duration.

4. The method according to claim 3, characterized in that The method for obtaining the urgency data comprises: Suppose the interval between the sending timestamp carried by the communication information to be transmitted and the current time is , the importance level carried is p, there are n data description tags carried, and the urgency coefficient of pre-acquisition relative to the i-th data description tag is , , the urgency data is z, then , where is a preset constant greater than zero.

5. The method according to claim 4, characterized in that The calculation method of the preference data includes: Assume the first communication duration is , the second communication duration is , the preferred degree data is y, then , where q is the pre-acquired link importance coefficient between the sender and the receiver, m is the amount of communication information to be transmitted, and x is the distance information. All are preset constants greater than zero.

6. The method according to claim 4, characterized in that The method for obtaining the emergency coefficient of the data description tag includes: A label coefficient comparison table is pre-constructed for each data description label, and the data description label is substituted into the label coefficient comparison table to obtain the emergency coefficient.

7. The method according to claim 5, characterized in that The method for obtaining the link importance coefficient includes: Acquire first location information of the first device and second location information of the second device; Connect the first position information and the second position information to determine an ideal link trajectory; Based on the pre-built emergency zoning map, determine the divided areas through which the ideal link trajectory passes; The link importance coefficient is determined based on a zone importance coefficient preset relative to each divided area.

8. A full-link optimal emergency response system, characterized in that: The system comprises a server (110) and a terminal device (120), wherein the terminal device (120) comprises a sender and a receiver of communication information to be transmitted, and the server (110) applies a method according to any one of claims 1 to 7.

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