Communication control device and communication control method

Abstract

The purpose is to configure data transmission paths in association with user terminal groups and thereby reduce network load. [Solution] The system includes a first determination unit 12 that determines whether multiple user terminals 2 belong to a group of user terminals 20 that move along the same path, based on a comparison of values ​​indicating conditional dependencies between the action vectors of multiple user terminals 2 in the first and second matrices generated by the learning unit 11, and a communication control unit 16 that, if the first determination unit 12 determines that multiple user terminals 2 belong to a group of user terminals 20 that move along the same path, issues a common instruction to the core network 4 to configure the same data transmission path for the group of user terminals 20.

Claims

[Claim 1] A first acquisition unit configured to acquire location information of each of the multiple user terminals associated with a location registration request signal transmitted from each of the multiple user terminals, A second acquisition unit is configured to acquire an action vector representing the direction of movement of each of the plurality of user terminals based on the location information of each of the plurality of user terminals acquired by the first acquisition unit, A learning unit is configured to construct a multivariate probability model using the action vectors of the plurality of user terminals, which are sampled from the action vectors of the plurality of user terminals acquired by the second acquisition unit based on observation periods consisting of multiple time periods, and to estimate the parameters of the constructed multivariate probability model, thereby generating a matrix representing the conditional dependency between the action vectors of the plurality of user terminals, which is a first matrix that is the matrix in the first observation period, and a second matrix that is the matrix in the second observation period following the first observation period. A first determination unit is configured to determine whether the plurality of user terminals belong to a group of user terminals moving along the same movement path, based on a comparison of values ​​indicating the conditional dependency between the action vectors of the plurality of user terminals in the first matrix and the second matrix generated by the learning unit, When the first determination unit determines that the plurality of user terminals belong to the group of user terminals moving along the same travel path, the communication control unit is configured to issue a common instruction to the core network to configure the same data transmission path for the group of user terminals. A communication control device equipped with the following features. [Claim 2] In the communication control device according to claim 1, The learning unit estimates the parameters of a multivariate normal distribution model with a sample mean of 0 for multivariate data where the action vectors of the multiple user terminals for each time period of the observation period are variables, by maximum likelihood estimation, thereby generating the precision matrix of the multivariate normal distribution model as the matrix showing the conditional dependency relationships between the action vectors of the multiple user terminals. A communication control device characterized by the following: [Claim 3] In the communication control device according to claim 2, The first determination unit is configured to determine that the plurality of user terminals belong to the group of user terminals moving along the same movement path if the value of the component in the first matrix that indicates the conditional dependency between the action vectors of the plurality of user terminals and the corresponding value of the component in the second matrix are non-zero and the change in value is within an acceptable range. A communication control device characterized by the following: [Claim 4] In the communication control device according to claim 1, The first acquisition unit acquires location information of each of the plurality of user terminals associated with the location registration request signal transmitted from each of the plurality of user terminals, which is stored in the data repository that comprehensively manages subscriber information and is included in the core network. A communication control device characterized by the following: [Claim 5] In the communication control device according to claim 1, Each of the location information of the plurality of user terminals associated with the location registration request signal is associated with information of a base station in the communication area that covers the location indicated by the location information. Furthermore, it includes a storage unit configured to store route information, which includes information on the communication areas of a series of base stations corresponding to a predefined travel route. Based on the routing information, the communication control unit instructs the core network to update the settings of each user terminal in the user terminal group to the data transmission path associated with the destination base station, before each user terminal in the user terminal group crosses the communication area of ​​the destination base station. A communication control device characterized by the following: [Claim 6] In the communication control device according to claim 5, Furthermore, the system includes a second determination unit configured to determine, based on the route information, whether each user terminal has crossed the communication area of ​​the destination base station, using the location information of each user terminal associated with the location registration request signal transmitted from each user terminal of the user terminal group. When the second determination unit determines that each of the user terminals in the user terminal group has crossed the communication area of ​​the destination base station, the communication control unit instructs the core network to perform data communication using the updated data transmission path for each of the user terminals in the user terminal group. A communication control device characterized by the following: [Claim 7] A first acquisition step of acquiring location information for each of the multiple user terminals associated with a location registration request signal transmitted from each of the multiple user terminals, A second acquisition step involves acquiring an action vector representing the direction of movement of each of the multiple user terminals based on the location information of each of the multiple user terminals acquired in the first acquisition step, A learning step which involves constructing a multivariate probability model using the action vectors of the multiple user terminals obtained in the second acquisition step, sampling them based on observation periods consisting of multiple time zones, and estimating the parameters of the constructed multivariate probability model to generate a matrix representing the conditional dependency between the action vectors of the multiple user terminals, the matrix being the first matrix in the first observation period, and the matrix being the second matrix in the second observation period following the first observation period; A first determination step, based on a comparison of values ​​in the first and second matrices generated in the learning step, that indicate the conditional dependency between the action vectors of the plurality of user terminals, determines whether the plurality of user terminals belong to a group of user terminals moving along the same movement path. If, in the first determination step, it is determined that the plurality of user terminals belong to the group of user terminals moving along the same travel path, a communication control step is performed to give the core network a common instruction to the group of user terminals to configure the same data transmission path. A communication control method comprising the following: [Claim 8] In the communication control method described in claim 7, The learning step involves estimating the parameters of a multivariate normal distribution model with a sample mean of 0 for multivariate data where the behavior vectors of the multiple user terminals for each time period of the observation period are variables, by maximum likelihood estimation, thereby generating the precision matrix of the multivariate normal distribution model as the matrix showing the conditional dependency relationships between the behavior vectors of the multiple user terminals. A communication control method characterized by the following: [Claim 9] In the communication control method described in claim 8, The first determination step determines that the multiple user terminals belong to the group of user terminals moving along the same movement path if the value of the component in the first matrix that indicates the conditional dependency between the action vectors of the multiple user terminals and the corresponding value of the component in the second matrix are non-zero and the change in value is within an acceptable range. A communication control method characterized by the following: [Claim 10] In the communication control method described in claim 7, The first acquisition step involves acquiring location information for each of the plurality of user terminals, which is associated with the location registration request signal transmitted from each of the plurality of user terminals and is stored in the data repository, from a data repository included in the core network that comprehensively manages subscriber information. A communication control method characterized by the following: [Claim 11] In the communication control method described in claim 7, Each of the location information of the plurality of user terminals associated with the location registration request signal is associated with information of a base station in the communication area that covers the location indicated by the location information. Furthermore, the system includes a storage step in which route information, including information on the communication areas of a series of base stations corresponding to a predefined travel route, is stored in a storage unit. The communication control step, based on the routing information, instructs the core network to update the settings of each user terminal in the user terminal group to the data transmission path associated with the destination base station, before each user terminal in the user terminal group crosses the communication area of ​​the destination base station. A communication control method characterized by the following: [Claim 12] In the communication control method described in claim 11, Furthermore, based on the route information, the system includes a second determination step of determining whether each user terminal has crossed the communication area of ​​the destination base station, using the location information of each user terminal associated with the location registration request signal transmitted from each user terminal of the user terminal group. The communication control step, when the second determination step determines that each of the user terminals in the user terminal group has crossed the communication area of ​​the destination base station, instructs the core network to perform data communication using the updated data transmission path for each of the user terminals in the user terminal group. A communication control method characterized by the following:

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