JP2015027066A - Radio communication system and communication control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately determine the place characteristics of a cell where a user device stays.SOLUTION: A radio communication system CS includes: a stay information recording unit 130 for storing multiple stay information elements SE; a cell stay detection unit 122 for detecting the start of a stay in a second cell Ca by a user device 100 that has been stayed in a first cell Cb; a stay information writing unit 124 for writing the first stay information element SE related to the stay of the user device 100 in the first cell Cb in the stay information storage unit 130 together with a first cell identifier indicating the first cell Cb; a stay information reading unit 126 for searching one or more second stay information elements SE related to the past stay of the user device 100 in the second cell Ca with the use of a second cell identifier indicating the second cell Ca, and reading the elements from the stay information storage unit 130; and a place characteristic determination unit 128 for determining the place characteristics of the second cell Ca where the user device 100 stays based on the read second stay information elements SE.

Description

  The present invention relates to a wireless communication system and a communication control method.

  In recent years, depending on the location where the user device is present, depending on the location of the user device, for example, a technology for providing the user device with information corresponding to the location (for example, advertisement information of a store that exists near the location) A technique for controlling the operation of the user apparatus has been proposed. The position of the user device is specified based on, for example, GPS (Global Positioning System) positioning information or base station information.

JP 2010-262484 A

  The role / function of the place (cell) in which the user apparatus exists (hereinafter may be referred to as “location characteristic”) differs depending on the user who uses the user apparatus. For example, a complex with a residential area and an office area is a home for some users, but a work location for other users. That is, one facility may have different location characteristics for each user. Therefore, it is considered that it is preferable that the location characteristic for the user is determined in a technique for providing information corresponding to the position to the user apparatus and a technique for controlling the operation of the user apparatus according to the position. This is because more appropriate information reflecting the location characteristics can be provided to the user, and the operation of the user apparatus can be more appropriately controlled by reflecting the location characteristics.

  In view of the above circumstances, an object of the present invention is to more appropriately determine a location characteristic of a cell where a user apparatus stays.

  The wireless communication system of the present invention includes: a stay information storage unit that stores a plurality of stay information elements each indicating information about stay in a cell by a user apparatus; and the user apparatus staying in a first cell A cell stay detection unit for detecting start of stay in a second cell different from one cell; and when the cell stay detection unit detects start of stay in the second cell, the first by the user apparatus A stay information writing unit for writing a first stay information element related to stay in a cell together with a first cell identifier indicating the first cell into the stay information storage unit, and the cell stay detection unit staying in the second cell When the start is detected, one or more second stay information elements related to the past stay in the second cell by the user apparatus are searched using a second cell identifier indicating the second cell, and the stay information storage unit Or Reading comprises a stay information reading unit, based on the one or more second stay information element read out, and the user equipment determines the location characteristic deciding section where characteristics of the second cell to stay.

  In a preferred aspect of the present invention, each of the plurality of stay information elements stored in the stay information storage unit includes a plurality of information items, and the location characteristic determination unit reads the second stay information read out A statistic is calculated for each of the plurality of information items included in the element, and a location characteristic of the second cell where the user apparatus stays is determined using the calculated statistic.

  In a preferred aspect of the present invention, the location characteristic determination unit uses the first statistic calculated using one or more second stay information elements for the first information item included in the plurality of information items. When the location characteristic of the second cell in which the user device stays cannot be uniquely determined, one or more second stay information elements are used for a second information item different from the first information item. The location characteristic is further determined using the calculated second statistic.

  In a preferred aspect of the present invention, the location characteristic determination unit uses the plurality of statistics calculated using one or more second stay information elements for each of the plurality of information items, and uses the user device. The location characteristics of the second cell in which the user device stays are determined for each statistic, and the most location characteristics among the plurality of location characteristics obtained by the determination are determined in the second cell in which the user apparatus stays. Confirm as location characteristics.

  In a preferred aspect of the present invention, each of the plurality of statistics sets is a part of the plurality of statistics calculated for each of the plurality of information items included in the read second stay information element. Including a plurality of statistics, the location characteristic determination unit determines a location characteristic of the second cell based on the statistics set using the plurality of statistics included in each statistics set, and a plurality of statistics Among the plurality of location characteristics obtained by determination based on each of the statistic sets, the most location characteristics are determined as the location characteristics of the second cell where the user apparatus stays.

  In a preferred aspect of the present invention, each of the plurality of stay information elements stored in the stay information storage unit includes a length of stay time related to a stay cell, a number of stays, and a time of operation for the user device executed during the stay. The information item includes at least one of the length, the number of times of wireless communication performed during the stay, the stay start time, the stay end time, the stay time zone, the stay day of the week, and the distance from the normal stay cell.

  The communication control method of the present invention stores a plurality of stay information elements each indicating information about stay in a cell by a user device in a stay information storage unit, and the user device staying in a first cell includes: When detecting the start of stay in a second cell different from the first cell and detecting the start of stay in the second cell, the user apparatus relates to stay in the first cell. When the first stay information element is written in the stay information storage unit together with the first cell identifier indicating the first cell, and when the start of stay in the second cell is detected, One or more second stay information elements related to stay in the second cell are searched using a second cell identifier indicating the second cell and read from the stay information storage unit, and the read one or more pieces Second stay information Based on the element, and a determining a location property of the second cell which the user equipment is staying.

  According to the present invention, the location characteristic of the cell where the user apparatus stays is more appropriately determined.

1 is a block diagram showing a wireless communication system according to a first embodiment. It is a figure which shows the cell which the base station which concerns on 1st Embodiment forms. It is a block diagram which shows the structure of the user apparatus which concerns on 1st Embodiment. It is a block diagram which shows the structure of the base station which concerns on 1st Embodiment. It is a flowchart which shows the determination operation | movement of the place characteristic which concerns on 1st Embodiment. It is a figure which shows the structural example of the stay information memorize | stored in a memory | storage part. It is a flowchart which shows the operation example of step S340 in the flowchart of FIG. 5 in detail. It is a figure of the decision tree which shows the algorithm of determination operation | movement of a place characteristic. It is a flowchart which shows the operation example of step S340 in the flowchart of FIG. 5 in detail. It is a flowchart which shows the operation example of step S340 in the flowchart of FIG. 5 in detail. It is a figure of the specific example of the decision tree which shows the algorithm of determination operation | movement of a place characteristic.

1. First Embodiment 1 (1). Overview of Radio Communication System FIG. 1 is a block diagram showing a radio communication system CS according to the first embodiment of the present invention. The radio communication system CS includes the user apparatus 100 and the base station 200 as elements. Base station 200 is connected to a core network including elements (not shown) other than those described above, an exchange, and a gateway. The network NW includes elements other than the user apparatus 100 among the elements included in the wireless communication system CS.

  Each element in the radio communication system CS performs communication according to an arbitrary access technology (Access Technology). For example, the LTE / SAE (Long Term Evolution / System Architecture Evolution) standard included in the 3GPP (Third Generation Partnership Project) standard is exemplified as an applicable access technology. Frequency multiplexing or time division multiplexing may be used as a radio access multiplexing method. In the radio communication system CS, a plurality of radio access technologies (eg, 3G and LTE) may be employed.

  As shown in FIG. 2, the base station 200 (200a, 200b) forms a cell C (Ca, Cb) around it. Cell C is identified by a unique cell identifier. The user apparatus 100 can wirelessly communicate with the base station 200 corresponding to the cell C in which the user apparatus 100 stays (is present). One base station 200 may form a plurality of cells C. The radio access technology used in each cell C can be arbitrarily selected. For example, in a plurality of cells C formed by one base station 200, a common radio access technology may be adopted, or different radio access technologies may be adopted.

1 (2). Configuration of each element 1 (2) -1. Configuration of User Device FIG. 3 is a block diagram illustrating a configuration of the user device 100 according to the first embodiment. The user device 100 includes a wireless communication unit 110, a control unit 120, and a storage unit 130. Illustrations of an output device that outputs audio, video, and the like, an input device that receives an instruction from a user, and the like are omitted for convenience. The radio communication unit 110 is an element for executing radio communication with the base station 200, and includes a transmission / reception antenna, a receiving circuit that receives a downlink radio signal from the base station 200 and converts it into an electric signal, a control signal, and a user A transmission circuit that converts an electrical signal such as a signal into an upstream radio signal. The memory | storage part 130 memorize | stores the information (stay information SI) regarding the communication control, especially the information regarding the stay in the cell by the user apparatus 100. That is, the storage unit 130 can function as a stay information storage unit. The stay information SI includes a plurality of stay information elements SE (details will be described later).

  The control unit 120 includes a cell stay detection unit 122, a stay information writing unit 124, a stay information reading unit 126, and a location characteristic determination unit 128. The cell stay detection unit 122 detects that the user apparatus 100 starts staying in the other cell C (new cell) from the cell C (original cell) where the user apparatus 100 is currently staying. The stay information writing unit 124 writes the stay information element SE regarding the stay in the cell C by the user device 100 together with the cell identifier indicating the cell C in the stay information SI (storage unit 130). The stay information reading unit 126 searches for the stay information element SE regarding the stay in the past cell C by the user device 100 using the cell identifier indicating the cell C, and reads it from the stay information SI (storage unit 130). The location characteristic determination unit 128 determines the location characteristics of the cell C where the user apparatus 100 stays based on the stay information element SE. Further details of the operation of each element in the control unit 120 will be described later. The control unit 120 and each element in the control unit 120 are functions realized by a CPU (not shown) in the user device 100 executing a computer program stored in the storage unit 130 and functioning according to the computer program. It is a block.

1 (2) -2. Configuration of Base Station FIG. 4 is a block diagram showing a configuration of the base station 200 according to the first embodiment. The base station 200 includes a wireless communication unit 210, a network communication unit 220, and a control unit 230. The wireless communication unit 210 is an element for performing wireless communication with the user device 100 and is configured in the same manner as the wireless communication unit 110 of the user device 100. The network communication unit 220 is an element that performs wired communication with other nodes in the network NW (other base stations 200, exchanges, gateways, and the like). The control unit 230 transmits / receives signals (control signals, data signals, etc.) to / from the user apparatus 100 and other nodes in the network NW via the wireless communication unit 210 and the network communication unit 220. The control unit 230 is a functional block realized by a CPU (not shown) in the base station 200 executing a computer program stored in a storage unit (not shown) and functioning according to the computer program.

1 (3). Location characteristic determination operation 1 (3) -1. Outline In the following, the location characteristic determination operation according to the present embodiment will be described. FIG. 5 is a flowchart showing the location characteristic determination operation. FIG. 6 is a diagram illustrating the configuration of the stay information SI stored in the storage unit 130. Stay information SI includes a plurality of stay information elements SE (SE1, SE2, SE3,...). Each stay information element SE indicates information regarding stay in the cell C by the user apparatus 100. Each stay information element SE includes a plurality of information items.

  In FIG. 5, the cell stay detection unit 122 determines whether the user apparatus 100 has finished staying in the cell Cb (original cell) and has started staying in the cell Ca (new cell) (whether the stay cell has been changed). Is detected (S100). When the change of the stay cell of the user apparatus 100 is not detected, the cell stay detection unit 122 repeats the detection loop (S100; NO). On the other hand, when it is detected that the user apparatus 100 starts to stay in the cell Ca from the cell Cb (S100; YES), the stay information writing unit 124 includes a stay information element regarding stay in the cell Cb (original cell). The SE is written in the stay information SI (storage unit 130) (S200). FIG. 6 shows the stay information SI after the stay information element SE4 related to the cell Cb which is the original cell is written when the user apparatus 100 starts staying from the cell Cb to the cell Ca at time 21:00. In this example, the stay information element SE includes a cell identifier, a stay start time, a stay end time, a stay time length, and an operation time length (a time length during which the user apparatus 100 has been operated in the cell) as information items.

  Thereafter, the stay information reading unit 126 determines whether or not the stay information element SE having the cell identifier of the new cell (cell Ca) is stored in the stay information SI (S310). In this example, since the stay information element SE1 having the cell identifier of the cell Ca is stored in the stay information SI, the determination in step S310 is YES. The stay information reading unit 126 reads the stay information element SE1 having the cell identifier of the cell Ca and notifies the place characteristic determination unit 128 (S320). In addition, when a plurality of stay information elements SE having the cell identifier of the new cell (cell Ca) are stored in the stay information SI, it is preferable that the stay information reading unit 126 reads the plurality of stay information elements SE. .

  On the other hand, when the stay information element SE having the cell identifier of the new cell is not stored in the stay information SI (S310; NO), the stay information reading unit 126 sends a notification indicating that the stay information element SE does not exist. It supplies to the place characteristic determination part 128 (S330).

  The location characteristic determination unit 128 determines the location characteristic of the new cell (cell Ca) where the user apparatus 100 stays based on the notification from the stay information reading unit 126 (S340). Examples of location characteristics include, but are not limited to, “home”, “workplace”, and “railway station”.

1 (3) -2. Details of Determination Operation The location characteristic determination operation in step S340 described above can be performed using various criteria and various algorithms. Hereinafter, a specific example of the determination operation will be described without limitation.

1 (3) -2a. Example 1
FIG. 7 is a flowchart showing an example of the determination operation in step S340 in the flowchart of FIG. The place characteristic determination unit 128 selects one information item included in the stay information element SE related to one or more new cells read by the stay information reading unit 126 (S3401), and calculates a statistic for the selected information item. (S3402). Then, the location characteristic determination unit 128 determines the location characteristics of the new cell using the calculated statistics (S3403).

  For example, if the stay time length is selected as an information item in step S3401, the average value or median value of the stay time length is calculated as a statistic in step S3402. In step S3403, the location characteristic determination unit 128 sets the location characteristics of the new cell to “long-term stay location” or “short-term stay location” depending on whether the statistic exceeds a threshold Th (for example, 5 hours). Determine either of these. “Long-term stay location” includes a plurality of location characteristics such as “home” and “work place”, and “Short-term stay location” includes a plurality of location characteristics such as “railway station” and “passing cell”. In this example, it is assumed that the average stay time length in the new cell (cell Ca) considering a plurality of stay information elements SE (not shown) is “9 hours” exceeding the threshold Th. As a result, it is determined in step S3403 that the location characteristic of the new cell is “long-term stay location”.

  The location characteristic determination unit 128 determines whether or not the location characteristic of the new cell is uniquely determined by the determination in step S3403 (S3404). In this example, in step S3403, it is determined that the location characteristic of the new cell is a “long-term stay location” including a plurality of location characteristics. Therefore, the location characteristic determination unit 128 determines that the location characteristics of the new cell are not uniquely determined (S3404; NO). Then, an information item different from the previously selected information item is selected (S3401), and a statistic is calculated (S3402). For example, a stay start time is selected as a different information item, and an average value or a median value of the stay start times is calculated as a statistic. The location characteristic determination unit 128 determines the location characteristics of the new cell according to whether the statistic indicates a predetermined pattern (S3403). For example, if the statistic of the stay start time is within the range from 6:00 am to noon, it is determined that the place characteristic is “workplace”; otherwise, the place characteristic is “home”. judge. In this example, “workplace” and “home” do not include additional location characteristics.

  When the location characteristics of the new cell are uniquely determined (S3404; YES), the location characteristics determination unit 128 determines the determined location characteristics (S3405). Information on the confirmed location characteristics of the new cell can be used arbitrarily. For example, it is preferable that the information provided to the user is selected according to the location characteristics of the new cell.

  The determination operation of FIG. 7 described above can be expressed as a decision tree algorithm. FIG. 8 shows a decision tree corresponding to the algorithm of this example. The location characteristics are classified into a node n1 (long-term stay location) and a node n2 (short-term stay location) as a result of the determination at the root node n0 (determination based on the length of stay time). The location characteristics are classified into node n3 (work place) and node n4 (home) as a result of determination at node n1 (determination based on stay start time), and result of determination at node n2 (determination based on operation time length) , Node n5 (railway station) and node n6 (passing cell). As understood from the above description, the location characteristic determination of this example is executed recursively.

1 (3) -2b. Example 2
FIG. 9 is a flowchart showing an example of the determination operation in step S340 in the flowchart of FIG. The location characteristic determination unit 128 selects one information item included in the stay information element SE related to one or more new cells (S3401) as in the above-described example (specific example 1), and performs statistical processing on the selected information item. The amount is calculated (S3402). Then, the location characteristic determination unit 128 determines the location characteristics of the new cell using the calculated statistics (S3403).

  The place characteristic determination unit 128 repeats the determination operation of steps S3401 to S3403 for all information items included in the stay information element SE (S3414). In other words, in this example, the location characteristics of the new cell are determined for each information item (for each statistic). When the location characteristic determination operation is executed for all the information items (S3414; YES), the location characteristic determination unit 128 causes the user device 100 to determine the largest location characteristic among the plurality of location characteristics obtained by the determination. It is determined as the location characteristics of the new cell to stay (S3415). That is, the location characteristics are determined by majority vote. For example, two information items (statistics) are determined to be “workplace”, another one information item (statistics) is determined to be “railway station”, and another information item (statistics) is determined. When it is determined as “passing cell”, the location characteristic determination unit 128 determines “place of work”, which is the most common location characteristic, as the location characteristic of the new cell.

  In Step S3415, when there are a plurality of the most frequent place characteristics (for example, when it is determined that “work place” is determined for two information items and “railway station” is determined for the other two information items), random Any one of the location characteristics may be selected, or the location characteristics determined for the information item with the highest priority may be selected according to a predetermined priority order of the information items.

1 (3) -2c. Example 3
In the third specific example, among the plurality of statistics calculated for each of the plurality of information items included in the stay information element SE related to one or more new cells read by the stay information reading unit 126, a plurality of statistics A “statistic set” is defined that includes the statistics. More specifically, for example, in the case where “average length of stay”, “average number of stays”, “stay period”, and “number of stays on holidays” exist as a plurality of statistics, the first set of statistics Includes “average stay time” and “average stay count”, the second statistic set includes “stay period” and “holiday stay count”, and the third statistic set includes “holiday stay count”. “Average stay time” and “Average stay count”. As understood from the above, one statistic may be included in a plurality of statistic sets.

  The “average stay time length” is an average value of the stay time length. The “average stay count” is the number of stays in the cell C per month. The “staying time zone” is a time zone in which the staying time occupies, such as “morning”, “daytime”, “night”, “midnight”, and the like. “Holiday stay count” is the number of stays per month that the user stayed in the cell C on a user's holiday (for example, Sunday).

  FIG. 10 is a flowchart showing an example of the determination operation in step S340 in the flowchart of FIG. The location characteristic determination unit 128 selects one of the plurality of statistics sets (S3421), and calculates the statistics to be included in the selected statistics set using the plurality of information items (S3422). Then, the location characteristic determination unit 128 determines the location characteristic of the new cell based on the set of statistics using the calculated plurality of statistics (S3423).

  The determination of the location characteristic in step S3423 is executed based on an arbitrary algorithm (for example, the decision tree algorithm of specific example 1). When the above-described first statistic set is selected in step S3421, as shown in FIG. 11, two statistics included in the first statistic set (“average stay time” and “average stay count”). The location characteristics are determined based on a decision tree algorithm based on a comparison between the threshold value and the threshold. For example, when the “average stay time” is 8 hours or more, it is determined that the location characteristic of the new cell is “home” or “work place”, and the “average stay frequency” is “25 per month”. If it is “more than a day”, the location characteristic of the new cell is determined to be “home”.

  The location characteristic determination unit 128 repeats the determination operation of steps S3421 to S3423 for all the statistic sets (S3424). That is, in this example, the location characteristics of the new cell are determined for each statistic set (for each decision tree). When the location characteristic determination operation is executed for all the statistic sets (S3424; YES), the location characteristic determination unit 128 determines the largest location characteristic among the plurality of location characteristics obtained by the determination as the user device 100. Is determined as the location characteristics of the new cell where the STA stays (S3425). That is, in this example, the location characteristic of a new cell is determined by majority vote for a plurality of location characteristics obtained using the decision tree algorithm. In addition, when there are a plurality of the most frequent place characteristics, the place characteristics can be determined as in the second specific example.

1 (4). Effects of this embodiment According to the above configuration, the location characteristics of a new cell where the user apparatus 100 stays are determined based on a plurality of information items (statistics). Therefore, the location characteristics of the new cell are more appropriately determined as compared with the configuration for determining the location characteristics based on a single criterion. In particular, when the location characteristics cannot be uniquely determined based on a single reference (for example, when “work place” and “home” whose stay time length approximates cannot be distinguished), the effect of the above configuration becomes more prominent. Further, since the location characteristics are determined based on the cell identifier, the load and power consumption of the determination process are reduced compared to the configuration in which the location information is determined by calculating the geographical position using GPS positioning information. The

2. Modifications The above embodiment can be variously modified. Specific modifications are exemplified below. Two or more aspects arbitrarily selected from the above embodiments and the following examples can be appropriately combined as long as they do not contradict each other.

2 (1). Modification 1
Various items can be included in the information items included in the stay information element SE. For example, the day of the week when the user stayed in the cell C (stay day of the week), the time period during which the user stayed in the cell C (stay time period), the number of times of wireless communication performed during the stay in the cell C, and the user apparatus 100 staying frequently The distance from the staying cell (for example, the cell C corresponding to the user's home) is shown as an example of the information item. All or part of the above information items may be included in the stay information element SE.

  As described above, since the length of stay is approximated between “work place” and “home”, “work place” and “home” can be discriminated by adding the stay day of the week as a criterion. More specifically, if the cell C does not stay on a holiday (for example, Saturday and Sunday), it can be determined as “work place”, and if it is a cell C that stays on a holiday, it can be determined as “home”.

  The distance from the normal staying cell can be arbitrarily calculated. For example, the number of hops (cell switching number) required from the normal stay cell to the cell C whose distance is to be measured can be calculated as the distance from the normal stay cell. In the above configuration, the configuration is simplified and the processing load is reduced as compared with the configuration in which the distance is calculated based on the GPS positioning information.

  In addition to the cell identifier, the information item may include another identifier derived from the cell identifier. For example, the identifier of the base station 200 forming the cell C corresponding to the cell identifier, the identifier of the frequency band used in the cell C, and the identifier of the antenna forming the cell C are included as “other identifiers”. May be. The “other identifier” may be an identifier included in the cell identifier, or may be an identifier (an identifier not included in the cell identifier) searched using the cell identifier as a key.

2 (2). Modification 2
In the above embodiment, the user apparatus 100 includes the cell stay detection unit 122, the stay information writing unit 124, the stay information reading unit 126, the location characteristic determination unit 128, and the storage unit 130 (stay information SI). However, at least one of the above elements may be provided in a device on the network NW side (for example, base station 200, dedicated server device). For example, all of the cell stay detection unit 122, the stay information writing unit 124, the stay information reading unit 126, the location characteristic determination unit 128, and the storage unit 130 (stay information SI) may be provided in a device on the network NW side. . Further, the location characteristic determination unit 128 may be provided in a device on the network NW side. As another configuration, the stay information writing unit 124, the stay information reading unit 126, the location characteristic determination unit 128, and the storage unit 130 (stay information SI) may be provided in a device on the network NW side. That is, each of the elements for carrying out the present invention can be arranged at an arbitrary location of the radio communication system CS.

2 (3). Modification 3
The statistic set used in the determination by the decision tree algorithm in the above specific example 3 may be determined in advance and stored in the storage unit 130 or dynamically set when step S340 in FIG. 5 is executed. May be. In addition, the threshold value (the reference value of which branch should be selected) in the decision tree algorithm in step S3423 may be set empirically or experimentally, so as to reduce the uncertainty of determination. (Ie, to reduce entropy).

  A plurality of statistics and determination order (logical position of the node) in each statistics set (each decision tree) can be arbitrarily set. For example, a plurality of statistics may be selected at random and the determination order may be set at random. A plurality of statistics may be selected at random, and the order of determination may be set so as to reduce the uncertainty of determination (that is, to reduce entropy).

2 (4). Modification 4
The user device 100 is an arbitrary device capable of wireless communication with the base station 200. The user device 100 may be, for example, a mobile phone terminal such as a feature phone or a smartphone, a desktop personal computer, a notebook personal computer, a UMPC (Ultra-Mobile Personal Computer), or a portable game machine. Other wireless terminals may be used.

2 (5). Modification 5
Each function executed by the CPU in each element (user device 100, base station 200) in the wireless communication system CS may be executed by hardware instead of the CPU, for example, an FPGA (Field Programmable Gate Array), You may perform with programmable logic devices, such as DSP (Digital Signal Processor).

  DESCRIPTION OF SYMBOLS 100 ... User apparatus, 110 ... Wireless communication part, 120 ... Control part, 122 ... Cell stay detection part, 124 ... Stay information writing part, 126 ... Stay information reading part, 128 ... Location characteristic determination , 130 ... Storage unit, 200 ... Base station, 210 ... Wireless communication unit, 220 ... Network communication unit, 230 ... Control unit, C (Ca, Cb) ... Cell, CS ... Wireless communication system , NW …… Network, SE …… Stay information element, SI …… Stay information.

Claims (7)

A stay information storage unit for storing a plurality of stay information elements each indicating information on stay in the cell by the user device;
A cell stay detection unit for detecting that the user apparatus staying in the first cell starts to stay in a second cell different from the first cell;
When the cell stay detection unit detects the start of stay in the second cell, the first stay information element related to stay in the first cell by the user apparatus is set together with the first cell identifier indicating the first cell. A stay information writing unit for writing into the stay information storage unit;
When the cell stay detection unit detects the start of stay in the second cell, one or more second stay information elements related to stays in the second cell in the past by the user apparatus are displayed in the second cell. A stay information reading unit that searches using the two-cell identifier and reads from the stay information storage unit;
A wireless communication system comprising: a location characteristic determination unit that determines a location characteristic of the second cell in which the user apparatus stays based on the read one or more second stay information elements. Each of the plurality of stay information elements stored in the stay information storage unit includes a plurality of information items,
The location characteristic determination unit
A statistic is calculated for each of the plurality of information items included in the read second stay information element, and a location characteristic of the second cell where the user apparatus stays is calculated using the calculated statistic. The wireless communication system according to claim 1. The location characteristic determination unit
The location characteristic of the second cell where the user device stays using the first statistic calculated using one or more second stay information elements for the first information item included in the plurality of information items If the second statistic calculated using one or more second stay information elements for a second information item different from the first information item is used, The wireless communication system according to claim 2. The location characteristic determination unit
Using the plurality of statistics calculated using one or more second stay information elements for each of the plurality of information items, the location characteristic of the second cell where the user apparatus stays is the statistics. Judge every
The radio | wireless communications system of Claim 2. The location characteristic with the largest among the several said location characteristics obtained by determination is determined as the said location characteristic of the said 2nd cell where the said user apparatus stays. Each of the plurality of statistics sets includes a plurality of statistics that are part of the plurality of statistics calculated for each of the plurality of information items included in the read second stay information element,
The location characteristic determination unit
Using a plurality of the statistics included in each statistics set, determining a location characteristic of the second cell based on the statistics set,
The most common place characteristic among the plurality of place characteristics obtained by determination based on each of the plurality of statistics sets is determined as the place characteristic of the second cell in which the user apparatus stays. Wireless communication system. Each of the plurality of stay information elements stored in the stay information storage unit is the stay time length, the number of stays, the time length of the operation performed on the user device during the stay, and the stay information element executed during the stay. 6. The wireless communication according to claim 2, wherein the information item includes at least one of the number of times of wireless communication, a stay start time, a stay end time, a stay time zone, a stay day of the week, and a distance from a normal stay cell. system. Storing a plurality of stay information elements, each indicating information about stay in the cell by the user device, in the stay information storage unit;
Detecting that the user device staying in the first cell starts to stay in a second cell different from the first cell;
When the start of stay in the second cell is detected, the stay information storage unit includes a first stay information element relating to stay in the first cell by the user apparatus together with a first cell identifier indicating the first cell. Writing to
When the start of stay in the second cell is detected, one or more second stay information elements related to past visits to the second cell by the user apparatus are displayed, and a second cell identifier indicating the second cell is displayed. Using the search and reading from the stay information storage unit,
Determining a location characteristic of the second cell where the user apparatus stays based on the one or more second stay information elements read out.

Images