Patent Description:
Short Message Service-Cell Broadcast (SMS-CB) is a widely-known feature in the telecommunication standards. SMS-CB is a method of sending messages to a plurality of mobile phone users in a defined area at the same time so as to enable a specific message being broadcasted in a region, for example, a region that is covered by the antenna of the core network. It can be used to send emergency alerts to the mobile phone users, as for example, a warning that the corona virus is being spread in this region.

The same functionality can be used directly at the operation center of an emergency service, for example, at a Public Safety Answering Point, PSAP. As the NG-<NUM> standard defines a set of media (e.g., image, video etc.) which can be transmitted along with an emergency call, the CB-SMS could also be used to convey the required media. Thus, the CB-SMS response could initiate a new path of communication between the call taker at the PSAP, for example a first responder or the like, and people who may be present in the region of interest.

However, in case of an emergency incident that has been reported by a mobile phone user, there may be a large number of people or mobile phone users present in the emergency area that are involved in the SMS-CB procedure and thus have sent responses to the PSAP accordingly. Thus, the call taker at the PSAP might be flooded with a large number of CB-SMS responses and he or she will not be able to handle this increased volume and the complexity of responses. Moreover, it will be hard to analyze the media which are communicated via these responses. Even worse, in case an army of intelligent bots have infected the different devices which reside in a specific antenna, then the information that will be transmitted to the call taker at the PSAP will be malevolently far more complex. This will result in a delay in the communication between the call taker and the emergency caller or the people that may be willing to help with respect to the emergency incident which delay may cause, at worst, human lives.

<CIT> discloses systems and methods for two-way, interactive communication regarding emergency notifications and responses for mobile environments. A specific geographic area is designated for selective emergency communications, which may comprise audio, text, video and other types of data. The emergency notification is sent to user's devices that are currently located in the designated area. In response to said emergency notification, the user's device may send photographs or video streams of nearby individuals or objects.

<CIT> discloses an apparatus and methods for utilizing the camera or video capability of particular communication devices, such as cell phones, to enhance handling of call, such as emergency calls. When an emergency call is received at an emergency response center, it may be queued until an agent is available for handling the call. The images collected from a plurality of different callers may be sorted into different event groups, which can then be prioritized for handling by an available agent. Additionally, tha individual callers for each group of events may also be prioritized based on the collected images/video, so that the caller who is closest to the incident may be called first.

<CIT> is directed to generating and sending an emergency notification short message service (SMS) message to one or more registered contacts of a user when the user's equipment is used to make an emergency call. When the user calls <NUM>, a gateway mobile location center system may cooperate with one or more other components of a mobile communications neetwork to route the <NUM> call to a nearby PSAP based at least in part on location information of the user's equipment from which the emergency call was placed. This same location information may be provided in the emergency notification SMS message.

Therefore, the present invention is based on the object to provide a computer-implemented method of processing an emergency incident and a corresponding emergency communication network for overcoming the above mentioned problem of not being able to process the information received in a very short time reliably.

This object is solved according to the present invention by a method of processing an emergency incident having the features according to claim <NUM>, and a corresponding emergency communication network having the features according to claim <NUM>. Preferred embodiments of the invention are specified in the respective dependent claims.

Thus, according to the present invention, a computer-implemented method of processing an emergency incident reported to a Public Safety Answering Point PSAP by a user of a mobile communication device, the method comprising the steps of:.

Accordingly, the present invention allows for presenting only the valuable data to the call taker at the PSAP so that he or she is able to handle the data faster and more efficiently. The inventive projection-friendly solution further ensures that the CB-SMS responses are malevolent-free so that the useless and irrelevant responses for handling the emergency incident are eliminated before being able to be forwarded to the call taker.

According to a preferred embodiment of the invention, the step of determining the geolocation of the mobile communication device that has initiated the emergency call comprises determining the radio cell in which the mobile communication device is located.

According to another preferred embodiment of the invention, the method further comprises a step of determining the geolocation of the mobile communication devices (<NUM>) that have sent CB-SMS response messages.

According to still a further embodiment of the invention, the method further comprises a step of creating a list comprising the objects and the geolocations of the respective mobile communication devices (<NUM>), wherein the objects in the list are ordered according to their similarity.

Preferably, for determining the similarity of the objects, a machine learning algorithm is applied.

Moreover, the method may further comprise a step of determining a convergence in the distribution of the response messages with respect to the objects and respective geolocations.

According to yet a further preferred embodiment of the invention, the method further comprises a step of filtering out the response messages that do not meet the convergence criteria for eliminating response messages from malevolent communication devices.

According to still another preferred embodiment of the invention, the method further comprises a step of forwarding the response messages that have not been filtered out to the PSAP for being handled by the call taker.

Preferably, the predetermined area around the emergency incident is an area having a predetermined radius around an antenna at which the mobile communication devices that are sending the response messages are registered.

According to still another preferred embodiment of the invention, the mobile communication device of the emergency caller is registered at the same antenna as the mobile communication devices that are sending the response messages.

Further, according to the present invention, an emergency communication network is provided comprising an ESRP connected to a PSAP, wherein the ESRP is adapted for carrying out the method for processing an emergency incident as outlined above.

The invention and embodiments thereof will be described below in further detail in connection with the drawing.

<FIG> shows a schematic overview for an architecture of an emergency communication network <NUM> for carrying out the method of processing an emergency incident according to an embodiment of the invention which comprises an Emergency Service Routing Proxy, ESRP, and PSAP <NUM>. Further, an antenna <NUM> is shown exemplarily at which a plurality of mobile phone users <NUM> that are present nearby within a certain radius have registered. At the PSAP <NUM> side, a call taker <NUM>, as for example, a first responder is present for handling and organizing emergency events that are reported via the emergency communication network <NUM>. For example, a mobile phone user of the plurality of users <NUM> registered at the antenna <NUM> makes an emergency call for reporting an emergency incident by dialing <NUM> - or any other appropriate telephone number for emergency services. The call is transmitted from a corresponding carrier that forwards it via the ESRP <NUM> to the next or most appropriate PSAP <NUM>, where a call taker <NUM> receives the emergency call. The call taker <NUM> may then trigger an SMS-CB procedure which is initiated by the ESRP <NUM> and according to which messages are sent to the users <NUM> that are co-located with the mobile phone user who initiated the emergency call. In this case, the mobile phone users <NUM> that are registered at the antenna <NUM> will respectively receive an SMS about the emergency event and will be asked to provide information on the emergency event, as for example, send photos or videos of the incident or the surrounding area.

<FIG> shows a flow chart for the method of processing an emergency incident according to an embodiment of the invention. The method starts as, in a first step S <NUM>, a new CB-SMS response is received at the ESRP <NUM> (see <FIG>) and/or a verification request, i.e., an on demand request is performed by the emergency call taker <NUM> at the PSAP <NUM> (see <FIG>).

In the second step S2, a check is performed in order to identify if other responses in a predetermined radius < x have been received from the same antenna (for example, the antenna <NUM> shown in <FIG>). It is noted that the radius value x is fully configurable in order to deploy the proposed functionality in different systems and or scenarios. If in step S2 it has been verified that other responses have been received within the predefined radius x, then in the subsequent step S3 Machine Learning, ML, techniques are applied to the responses that meet the requirement for the radius "< x" specified in step S2. By applying a simple ML algorithm, there will be a convergence in the distribution of responses in terms of content and location. But this could be considered as an ideal scenario in the real world. There are many reasons for not converging in any sense. Thus, a further optimization is required in the responses that have been ordered so that their content combined with the geolocation information will maximize the value of these raw data efficiently without any comptonization. Moreover, ruling out techniques are mandatory for eliminating spam responses in order to demystify the puzzle at first and guarantee the validity of the system's accuracy at second.

As mentioned above, after receiving the CB-SMS responses which comprise, amongst others, photos or videos showing objects in the vicinity of the emergency incident, these responses will be ordered by the objects' similarity and their location as presented in the table of step S4A. The proposed procedure for doing this is to apply the ML techniques in order to identify if there are similar objects for closely located users. Even if there probably will be a convergence in distribution of the responses, it is expected that the closest located users will reply in their respective responses that they see the same object, the severity of each response will be initially considered as high. The reason for doing this is that the reliability and trust of these responses by ruling out the spam responses have to be validated.

Subsequently, the module will perform an object comparison using the different classes of objects that have been detected. Namely, in step S4, the puzzle-driven proposed solution will be applied over the objects and devices that have been identified in the previous steps and that have been ordered or sorted in the objects and devices list. That is, the aim of this step is to "examine" the different devices in order to identify if their responses are accurate and guileless. The importance of this step is crucial because the different devices may create specific responses that aim at the confusion of the emergency caller and the paralysis of the emergency service. In this context, the core of this step is devoted to exposing potential malevolent behaviors, by verifying the responses between adjacent devices, i.e. for example, mobile phone devices that have been identified to be close to each other or even at the same geolocation. That is, if N devices which parasitize under the same antenna (e.g. antenna <NUM> of <FIG>) claim that they face the same incident, in terms of context, scene objects and geolocation data, then this information simply has to be verified.

Thus, an intelligent botnet would be in position to create similar-like, fake photos, for spatial irrelevant devices, in order to confuse the call taker <NUM> at the PSAP. Therefore, at the PSAP side, the most efficient means to rule out such irrelevant information and devices is to verify the different objects that are included in the emergency scene and that are present on the media (photos, videos, text) captured by the different devices, as the mobile phones registered at the antenna <NUM> shown in <FIG>. Thus, the verification of the objects between adjacent or nearby located devices or mobile phones seems to be a suitable and easy approach to solve this problem. The verification will be done based on the number of similar responses from the different devices or mobile phones at a specific geolocation. That is, for example, four devices or mobile phones are located in the same area with a distance less than x meters between them. If three devices report the same objects and only device reports a different object, then it is rather likely that the one differing object is not relevant or false.

Considering the above, in step S4A, a list is received as an input, the list comprising the different objects from the different devices or mobile phones along with their respective position. After this, in step S4B, for each binary device combination that meets specific location requirements, any potential object deviation triggers the verification mechanism. Therefore, if two devices or mobile phones are found to be inaccurate or deviating as to what they have reported, but they do meet the location difference requirement, then a new verification is triggered based on random objects. The random objects belong to a list of objects retrieved from the examined binary device combination, or retrieved from a separate list. The random objects will be selected using a RAND function from a list of objects that will be created upon receiving the first responses from the various devices or mobile phones. To exemplify this, it may be assumed that four devices or mobile phones return images and videos that contain ten different objects.

A list comprising these objects will be created, and if there is a need to verify if the devices report the truth, then a number of these objects will be selected and will be presented to the device or mobile phone that needs to be verified.

It is noted that at the ESRP, according to an embodiment, there may be stored a default list with regular extracted objects for all emergency incidents. This separate list may be "refreshed" automatically with a predetermined configurable number of more common and/or more frequently extracted objects. The option for using a) a list of objects retrieved from the examined binary device combination or b) the default list may be configurable at the ESRP <NUM>. In this case, the algorithm may consult the value of this configuration. This is because it is not meaningful to only verify the true captured objects between two devices or mobile phones. Moreover, it is noted that a malicious bot would be able to easily respond positively to everything it was presented as a possible emergency incident scene object.

After the verification outlined above, in step S4C, a far more reduced map is ready to be presented to the call taker at the PSAP.

Claim 1:
Computer-implemented method of processing an emergency incident reported to a Public Safety Answering Point PSAP (<NUM>) by a user of a mobile communication device, the method comprising the steps of:
- receiving, by a call taker (<NUM>) at the PSAP (<NUM>), an emergency call initiated by a mobile telecommunication device reporting an emergency incident;
- determining the geolocation of the mobile communication device;
- triggering a Short Message Service-Cell Broadcast, SMS-CB, wherein SMS messages are sent to mobile communication devices (<NUM>) located within a predetermined area around the determined geolocation,
- receiving a plurality CB-SMS response messages from the mobile communication devices (<NUM>), the response messages comprising objects related to the emergency incident;
- extracting the objects from the respective response messages;
- performing an object comparison on the extracted objects for determining a similarity of the objects with respect to each other; and
- verifying if similar objects have been received from co-located mobile communication devices (<NUM>) to rule out irrelevant information.