KR-102963983-B1 - Apparatus and method for estimating traffic per building to expand communication equipment

Abstract

A traffic estimation device and method are disclosed that can estimate traffic per building by using status information of a remote unit of a base station and information collected from a user terminal. A traffic estimation device for estimating traffic per building according to one embodiment includes: a storage unit that stores location information of each building; a remote unit selection unit that selects a remote unit among a plurality of remote units of a base station in which a traffic overload has occurred; a terminal selection unit that selects terminals connected to the selected remote unit; and a traffic estimation unit that calculates the number of terminals located in each building by comparing location information received from the selected terminals with the location information of each building, and estimates the traffic of each building based on the calculated number of terminals.

Inventors

• 양세훈

Assignees

• 주식회사 케이티

Dates

Publication Date

20260511

Application Date

20200701

Claims (20)

1. In a traffic estimation device for estimating traffic per building for the expansion of communication equipment, A storage unit that stores location information for each building; A remote unit selection unit that selects a remote unit with a traffic overload among a plurality of remote units of a base station; A terminal selection unit for selecting terminals connected to the above-mentioned selected remote unit; A traffic estimation unit that calculates the number of terminals located in each building by comparing location information received from the selected terminals with location information of each building, and estimates the traffic of each building based on the calculated number of terminals; and A traffic estimation device comprising a heavy traffic user detection unit that monitors the amplifier temperature and transmission power of a repeater connected to a remote unit and, when the amplifier temperature and transmission power increase above a predetermined value, determines the presence or absence of a heavy traffic user based on the number of terminals located in the building where the repeater is installed.
2. In Article 1, The above storage unit is, Store the center coordinates of each building as location information for each building, and The above traffic estimation unit, A traffic estimation device characterized by calculating the number of terminals located within a predetermined distance from the center coordinates by comparing the center coordinates of the building with the location information of each terminal for each building.
3. In Article 1, The above terminal selection unit is, A traffic estimation device characterized by selecting terminals connected to the selected remote unit in multiple past dates and time zones identical to the date and time zone where the traffic overload occurred.
4. In Article 1, The above remote unit selection unit is, A traffic estimation device characterized by monitoring traffic per port of a digital unit of the above-mentioned base station and selecting a remote unit that has become overloaded.
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6. In Article 1, The above storage unit stores location information received from each of a plurality of terminals, and The above traffic estimation unit, A traffic estimation device characterized by comparing the location information of the selected terminals among the location information received and stored from each of the plurality of terminals with the location information of each building, calculating the number of terminals located in each building, and estimating the traffic of each building based on the calculated number of terminals.
7. In a traffic estimation device for estimating traffic per building for the expansion of communication equipment, A storage unit that stores a list of access points by building; A remote unit selection unit that selects a remote unit with a traffic overload among a plurality of remote units of a base station; A terminal selection unit for selecting terminals connected to the above-mentioned selected remote unit; and It includes a traffic estimation unit that calculates the number of terminals located in each building by matching identification information of access points collected from the selected terminals with the building-specific access point list, and estimates the traffic of each building based on the calculated number of terminals. The above traffic estimation unit, For terminals that do not include an access point matching the building, A traffic estimation device that identifies other terminals whose buildings have been determined that have at least one matching access point, calculates the sum of the inverses of the signal strength differences of the at least one matching access point for each identified other terminal, and determines the building where the other terminal with the largest sum is located as the building where the terminal is located.
8. In Article 7, The above traffic estimation unit, A traffic estimation device characterized by calculating the sum of the inverses of the absolute values of the access points matched to each building for each terminal, and determining the building with the largest sum as the building where the terminal is located.
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10. In Article 7, The above traffic estimation unit, For terminals that do not include an access point matching the building, A traffic estimation device characterized by determining the building where the other terminal with the most matching access points among other terminals whose buildings have been determined is located as the building where the terminal is located.
11. In Article 7, The above terminal selection unit is, A traffic estimation device characterized by selecting terminals connected to the selected remote unit in multiple past dates and time zones identical to the date and time zone where the traffic overload occurred.
12. In Article 7, A traffic estimation device further comprising: a heavy traffic user detection unit that monitors the amplifier temperature and transmission power of a repeater connected to a remote unit and, when the amplifier temperature and transmission power increase above a predetermined value, determines the presence or absence of a heavy traffic user based on the number of terminals located in the building where the repeater is installed.
13. As a method for estimating traffic per building for expanding communication equipment in a traffic estimation device, Step of storing location information for each building; A step of selecting a remote unit among a plurality of remote units of a base station that has experienced a traffic overload; A step of selecting terminals connected to the selected remote unit; A step of calculating the number of terminals located in each building by comparing the location information received from the selected terminals with the location information of each building, and estimating the traffic of each building based on the calculated number of terminals; and A method comprising the step of monitoring the amplifier temperature and transmission power of a repeater connected to a remote unit, and determining whether there is a heavy traffic user based on the number of terminals located in the building where the repeater is installed, when the amplifier temperature and transmission power increase above a predetermined value.
14. In Article 13, The above-mentioned saving step is, Store the center coordinates of each building as location information for each building, and The above-mentioned estimation step is, A method characterized by calculating the number of terminals located within a predetermined distance from the center coordinates by comparing the center coordinates of the building with the location information of each terminal for each building.
15. In Article 13, The step of selecting the above terminals is, A method characterized by selecting terminals connected to the selected remote unit in multiple past dates and time zones identical to the date and time zone where the traffic overload occurred.
16. In Article 13, The step of selecting the above remote unit is, A method characterized by monitoring traffic per port of a digital unit of the above-mentioned base station and selecting a remote unit that has become overloaded.
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18. In Article 13, The above-mentioned storage step includes the step of storing location information received from each of a plurality of terminals, and The step of estimating the above traffic is, A method characterized by comparing the location information of selected terminals among the location information received and stored from each of the plurality of terminals with the location information of each building, calculating the number of terminals located in each building, and estimating the traffic of each building based on the calculated number of terminals.
19. In a method for estimating traffic per building for expanding communication equipment in a traffic estimation device, Step of saving a list of access points by building; A step of selecting a remote unit among a plurality of remote units of a base station that has experienced a traffic overload; A step of selecting terminals connected to the selected remote unit; and The method includes the step of calculating the number of terminals located in each building by matching identification information of access points collected from the selected terminals with the building-specific access point list, and estimating the traffic of each building based on the calculated number of terminals. The above-mentioned estimation step is, For terminals that do not include an access point matching the building, A method for identifying other terminals whose buildings have been determined that have at least one matching access point, and for each identified other terminal, calculating the sum of the inverses of the signal strength differences of the at least one matching access point, and then determining the building where the other terminal with the largest sum is located as the building where the terminal is located.
20. In Article 19, The above-mentioned estimation step is, A method characterized by calculating, for each terminal, the sum of the inverses of the absolute values of the access points matched to each building, for each building, and determining the building with the largest sum as the building where the terminal is located.

Description

Apparatus and method for estimating traffic per building to expand communication equipment The present invention relates to an apparatus and method for estimating traffic by building, and more specifically, to an apparatus and method for estimating traffic by building for the expansion of communication equipment. Since the commercialization of 5G, the number of 5G subscribers has been steadily increasing. While the expansion of telecommunications equipment is underway to extend 5G coverage, most of this expansion is taking place outdoors. Consequently, equipment expansion in indoor areas—where approximately 70% of total traffic occurs—has been insufficient, resulting in unstable 5G communication and frequent operation in LTE mode. Therefore, telecommunications operators are attempting to expand 5G in-building equipment (repeaters or femtocells) to improve user experience quality while minimizing LTE traffic overload. It is expected that prioritizing the expansion of equipment in high-traffic buildings, rather than sequentially installing it in all buildings, will allow for the satisfaction of user Quality of Service (QoS) while minimizing costs. To select buildings for telecommunications equipment expansion, traffic must be monitored on a building-by-building basis. Currently, LTE traffic can only be monitored by individual channel ports within the Digital Units (DUs) that constitute the base station. In other words, traffic monitoring is only possible at the level of Remote Units (RUs) connected to each channel port of the Digital Unit. In urban areas, since a single RU distributes signals to N different buildings using repeaters, it is impossible to identify which of the N buildings generates high traffic based solely on RU-level traffic; consequently, it is impossible to select buildings requiring expansion. Therefore, the current method relies on field staff intuition to select buildings requiring expansion based on RUs experiencing traffic overload. However, since field staff generally work in rotation, continuous monitoring and management are impossible. FIG. 1 is a diagram showing the configuration of a building-specific traffic estimation system according to one embodiment of the present invention. Figure 2 is a diagram showing the configuration of one embodiment of the traffic estimation device of Figure 1. FIG. 3 is a graph showing the amount of downlink traffic change according to the number of user terminals according to one embodiment of the present invention. FIG. 4 is a diagram showing a list of access points collected from a user terminal according to an embodiment of the present invention. FIG. 5 is a diagram showing a list of access points collected from a user terminal according to another embodiment of the present invention. Figure 6 is a diagram showing the configuration of another embodiment of the traffic estimation device of Figure 1. FIG. 7 is a graph showing the change in amplifier temperature and transmission power of a repeater according to the amount of traffic according to one embodiment of the present invention. FIG. 8 is a flowchart illustrating a traffic estimation method according to one embodiment of the present invention. FIG. 9 is a flowchart illustrating a traffic estimation method according to another embodiment of the present invention. FIG. 10 is a flowchart illustrating a method for estimating heavy traffic users according to an embodiment of the present invention. The aforementioned objectives, features, and advantages will become clearer through the following detailed description in conjunction with the attached drawings, and accordingly, a person skilled in the art to which the present invention pertains will be able to easily implement the technical concept of the present invention. Furthermore, in describing the present invention, if it is determined that a detailed description of known technology related to the present invention may unnecessarily obscure the essence of the present invention, such detailed description will be omitted. Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the attached drawings. FIG. 1 is a diagram showing the configuration of a building-specific traffic estimation system according to an embodiment of the present invention. Referring to FIG. 1, the building-specific traffic estimation system according to the present embodiment includes a digital unit (DU) (110), a remote unit (RU) (120), a repeater (130), a user terminal (140), and a traffic estimation device (150). The digital unit (110) and the remote unit (120) constitute a base station. Preferably, the digital unit (110) and the remote unit (120) are each installed at a distance and connected to each other, and it is common for a plurality of remote units (120) to be connected to a single digital unit (110). The above digital unit (110) is equipment that performs various signaling to provide communication services