US-12621728-B2 - Base station for detecting abnormality of cell coverage and operating method thereof

US12621728B2US 12621728 B2US12621728 B2US 12621728B2US-12621728-B2

Abstract

A device and a method for detecting abnormality in cell coverage in a wireless communication system are provided. A base station includes a communication interface, a memory, and a processor operatively coupled to the communication interface and the memory. The processor is configured to obtain information related to an abnormal area from a network management device. The processor is configured to identify, in a case in which a user equipment (UE) handovers from another base station to the base station, whether the abnormal area is provided by the other base station based on the information related to the abnormal area. The processor is configured to detect, in a case in which the abnormal area is provided by the other base station, whether cell coverage of the base station is affected by the abnormal area provided by the other base station, based on information related to timing advance (TA) of the other base station.

Inventors

Bumgon Choi
Byoungha YI

Assignees

SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20230110
Priority Date: 20220110

Claims (20)

1 . A first base station comprising: a communication interface; memory comprising one or more storage media storing instructions; and at least one processor comprising processing circuitry, wherein the instructions, when executed by the at least one processor individually or collectively, cause the first base station to: obtain information related to an occurrence of an abnormal area from a network management device, wherein the abnormal area is different from a pre-defined area of cell coverage of a base station, receive, from a second base station, a handover request signal including information related to timing advance (TA) of the second base station, based on receiving the handover request signal, identify whether the abnormal area is provided by the second base station in accordance with the information related to the occurrence of the abnormal area, based on identifying that the abnormal area is provided by the second base station, detect whether cell coverage of the first base station is affected by the abnormal area provided by the second base station, in accordance with the information related to the TA of the second base station and the information related to the occurrence of the abnormal area, and based on detecting that the cell coverage of the first base station is affected by the abnormal area provided by the second base station, cause to control the second base station to change a configuration related to the abnormal area provided by the second base station.
2 . The first base station of claim 1 , wherein the abnormal area provided by the second base station comprises at least one of overshooting coverage or island coverage.
3 . The first base station of claim 2 , wherein the instructions, when executed by the at least one processor individually or collectively, cause the first base station to: determine, in a case in which a length corresponding to the TA of the second base station exceeds a size of a pre-defined cell coverage of the second base station, that the cell coverage of the first base station is affected by the overshooting coverage.
4 . The first base station of claim 2 , wherein the instructions, when executed by the at least one processor individually or collectively, cause the first base station to: determine, in a case in which a length corresponding to the TA of the second base station exceeds a size of a maximum continuous coverage of the second base station, that the cell coverage of the first base station is affected by the island coverage.
5 . The first base station of claim 1 , wherein the information related to the occurrence of the abnormal area includes identification information of the second base station providing the abnormal area, and information related to at least one of a pre-defined cell coverage of the second base station providing the abnormal area, or a maximum continuous coverage of the second base station providing the abnormal area.
6 . The first base station of claim 5 , wherein the instructions, when executed by the at least one processor individually or collectively, cause the first base station to: identify whether the abnormal area is provided by the second base station, based on the identification information of the second base station providing the abnormal area included in the information related to the occurrence of the abnormal area.
7 . The first base station of claim 1 , wherein the configuration related to the abnormal area provided by the second base station includes at least one of an antenna azimuth corresponding to a direction of the first base station or transmission power of the second base station.
8 . The first base station of claim 1 , wherein the instructions, when executed by the at least one processor individually or collectively, cause the first base station to: obtain the information related to the TA of the second base station via an internal interface with the second base station.
9 . The first base station of claim 1 , wherein the instructions, when executed by the at least one processor individually or collectively, cause the first base station to: based on detecting that the cell coverage of the first base station is affected by the abnormal area provided by the second base station, transmit information related to the affect to the cell coverage of the first base station caused by the abnormal area, to at least one of the network management device or the second base station, such that the second base station change the configuration related to the abnormal area provided by the second base station.
10 . The first base station of claim 1 , wherein the network management device comprises an element management system (EMS).
11 . A method performed by a first base station, the method comprising: obtaining information related to an occurrence of an abnormal area from a network management device, wherein the abnormal area is different from a pre-defined area of cell coverage of a base station, receiving, from a second base station, a handover request signal including information related to timing advance (TA) of the second base station, based on receiving the handover request signal, identifying whether the abnormal area is provided by the second base station in accordance with the information related to the occurrence of the abnormal area, based on identifying that the abnormal area is provided by the second base station, detecting whether cell coverage of the first base station is affected by the abnormal area provided by the second base station, in accordance with the information related to the TA of the second base station and the information related to the occurrence of the abnormal area, and based on detecting that the cell coverage of the first base station is affected by the abnormal area provided by the second base station, causing to control the second base station to change a configuration related to the abnormal area provided by the second base station.
12 . The method of claim 11 , wherein the abnormal area provided by the second base station comprises at least one of overshooting coverage or island coverage.
13 . The method of claim 12 , further comprising: determining, in a case in which a length corresponding to the TA of the second base station exceeds a size of a pre-defined cell coverage of the second base station, that the cell coverage of the first base station is affected by the overshooting coverage.
14 . The method of claim 12 , further comprising: determining, in a case in which a length corresponding to the TA of the second base station exceeds a size of a maximum continuous coverage of the second base station, that the cell coverage of the first base station is affected by the island coverage.
15 . The method of claim 11 , wherein the information related to the occurrence of the abnormal area includes identification information of the second base station providing the abnormal area, and information related to at least one of a pre-defined cell coverage of the second base station providing the abnormal area, or a maximum continuous coverage of the second base station providing the abnormal area.
16 . The method of claim 15 , further comprising: identifying whether the abnormal area is provided by the second base station, based on the identification information of the second base station providing the abnormal area included in the information related to the occurrence of the abnormal area.
17 . The method of claim 11 , wherein the configuration related to the abnormal area provided by the second base station includes at least one of an antenna azimuth corresponding to a direction of the first base station or transmission power of the second base station.
18 . The method of claim 11 , further comprising: obtaining the information related to the TA of the second base station via an internal interface with the second base station.
19 . The method of claim 11 , further comprising: based on detecting that the cell coverage of the first base station is affected by the abnormal area provided by the second base station, transmitting information related to the affect to the cell coverage of the first base station caused by the abnormal area, to at least one of the network management device or the second base station, such that the second base station change the configuration related to the abnormal area provided by the second base station.
20 . The method of claim 11 , wherein the network management device comprises an element management system (EMS).

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application is a continuation application, claiming priority under § 365(c), of an International application No. PCT/KR2023/000178, filed on Jan. 4, 2023, which is based on and claims the benefit of a Korean patent application number 10-2022-0003588, filed on Jan. 10, 2022, in the Korean Intellectual Property Office, and of a Korean patent application number 10-2022-0011782, filed on Jan. 26, 2022, in the Korean Intellectual Property Office, the disclosure of each of which is incorporated by reference herein in its entirety. TECHNICAL FIELD The disclosure relates to a base station for detecting abnormality of cell coverage and operating method thereof. BACKGROUND ART A wireless communication system may include a plurality of base stations (e.g., evolved node base station (eNB) or next generation node base station (gNB)) forming a wireless link with a user equipment (UE). Each base station may form a cell coverage of a certain size for forming a wireless link with at least one user terminal. The cell coverage may indicate a range in which communication between a base station and a UE is valid in the wireless communication system. The above information is presented as background information only to assist with an understanding of the disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the disclosure. DISCLOSURE Technical Problem The wireless communication system may control each base station to form pre-planned cell coverage so that communication quality of the wireless communication system is not reduced due to interference between cell coverage formed by a plurality of base stations. The cell coverage formed by the base station may generate an abnormal area different from the cell coverage planned by the actual wireless environment. For example, the abnormal area may comprise overshooting coverage that is formed relatively larger than planned cell coverage and/or island coverage that is formed in an area outside the planned cell coverage. In a wireless communication system, an abnormal area different from the planned cell coverage may generate unnecessary handover (e.g., ping-pong handover) or cause interference with other cell coverage, thereby reducing the communication quality of the wireless communication system. Aspects of the disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the disclosure is to provide a device and a method for detecting abnormality of cell coverage in a base station of a wireless communication system. Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments. Technical Solution In accordance with an aspect of the disclosure, a base station is provided. The base station includes a communication interface, a memory, and a processor operatively coupled to the communication interface and the memory. The processor is configured to obtain information related to an abnormal area from a network management device. The processor is configured to identify, in a case in which a user equipment (UE) handovers from another base station to the base station, whether the abnormal area is provided by the other base station based on the information related to the abnormal area. The processor is configured to detect, in a case in which the abnormal area is provided by the other base station, whether cell coverage of the base station is affected by the abnormal area provided by the other base station, based on information related to timing advance (TA) of the other base station. In accordance with another aspect of the disclosure, a method performed by a base station is provided. The method includes obtaining information related to an abnormal area from a network management device. The method comprises identifying, in a case in which a UE handovers from other base station to the base station, whether the abnormal area is provided by the other base station based on the information related to the abnormal area. The method comprises detecting, in a case in which the abnormal area is provided by the other base station, whether cell coverage of the base station is affected by the abnormal area provided by the other base station, based on information related to TA of the other base station. Advantageous Effects According to various embodiments of the disclosure, when a UE handovers from another base station in a base station of a wireless communication system, an affect to a cell coverage of the base station caused by an abnormal area of the other base station can be analyzed and resolved by detecting the affect to the cell coverage of the base station caused by the abnormal area of the other base station based on informatio