Abstract: An apparatus for controlling a radio parameter of radio cells, includes: an evaluation targeted radio cell selection unit configured to decide evaluation targeted candidate radio cells based on a change of a connection target radio cell of a radio terminal, which takes a control targeted radio cell as a serving cell or surrounding radio cells of the control targeted radio cell as a serving cell, associated with a change of a connection range of the control targeted radio cell by control of the radio parameter of the control targeted radio cell, and select at least one of the evaluation targeted candidate radio cells as an evaluation targeted radio cell for evaluating the radio parameter of the control targeted radio cell; and a radio parameter control unit configured to control the radio parameter of the control targeted radio cell based on quality of the evaluation targeted radio cell.

Abstract: The present invention is a radio parameter control system for deciding a radio parameter of radio cells, using radio terminal measurement information measured by a radio terminal, the radio parameter control system comprising: radio terminal movement judgment means configured to judge whether largeness of movement of the radio terminal is within a predetermined range; and radio parameter decision means configured to distinguish between the radio terminal measurement information reported by the radio terminal of which largeness of the movement is within the predetermined range and the radio terminal measurement information reported by the radio terminal of which largeness of the movement is beyond the predetermined range, and decide the radio parameter of the radio cells.

Abstract: A radio parameter control apparatus decides a radio parameter from which a throughput of UE is improved. A radio parameter control apparatus includes: a radio quality prediction unit (12) that predicts radio quality of a radio terminal due to change of a radio parameter of a radio cell; a resource-allocated number-of-communications prediction unit (13) that predicts the number of communications considered as allocation targets of radio resources in a radio cell due to the change of the radio parameter; a communication quality prediction unit (14) that predicts communication quality due to the change of the radio parameter based on a prediction result of the radio quality and a prediction result of the number of communications; and a radio parameter decision unit (15) that decides a radio parameter by which improvement of communication quality is predicted based on the predicted communication quality.

Abstract: In a wireless cell, the potential deterioration in quality is efficiently detected when the indication of abnormalities is weak. Provided are a step of calculating one or more radio qualities for each coverage area of a wireless cell; a step of measuring one or more network statistical qualities for each coverage area of the wireless cell; a step of making a pair of each network statistical quality and one or more radio qualities for each coverage area of each wireless cell; and a step of calculating, based on the pairs of each network statistical quality and one or more radio qualities for the coverage areas of the wireless cells, the correlation between each network statistical quality and one or more radio qualities.

Abstract: A handover properties estimation system includes a moving-route extraction unit which extracts moving routes which pass through a handover area or a neighboring area by using map information of the handover area and the neighboring area. The handover area is an area in which a handover process occurs between cells in a mobile communication system. The system further includes a moving-route handover properties calculation unit for calculating handover properties of the moving routes extracted by the moving-route extraction unit, by using radio-wave environment information of the moving routes.

Abstract: A mobile terminal includes a measuring unit that measures at least the moving speed of the self terminal and communication quality of wireless communication, and a communication unit that transmits terminal information including moving speed information and communication quality information. A quality monitoring apparatus (90) includes a terminal information collection unit (901) that collects the terminal information from at least one mobile terminal, and a terminal information classification unit (903) and a quality analyzing unit (904) that monitor communication quality in a predetermined target area for each moving speed range of the mobile terminal based on the collected terminal information.

Abstract: A neighbor list optimization unit (11) performs optimization of a neighbor list that is wirelessly transmitted by a base station (2) that manages an objective cell (61). The neighbor list optimization unit (11) includes a cell selection unit (110). The cell selection unit (110) selects, based on cell types defined according to a difference in cell sizes, a plurality of registered cells to be registered in the neighbor list from a plurality of other cells (62) than the objective cell (61). Accordingly, for example, it is possible to perform neighbor list optimization suitable for a heterogeneous network (HetNet) environment in which different types of cells having different sizes in coverage (cell sizes) are adjacently arranged.

Abstract: A radio parameter control apparatus (1) includes a measurement report collection unit (10) and a radio parameter determination unit (11). The measurement report collection unit (10) collects a plurality of measurement reports generated by at least one mobile station (5), each of the measurement reports containing a measurement result of radio quality of a first cell (62) managed by a base station (4). The radio parameter determination unit (11) determines, based on the plurality of measurement reports so as to reduce the number of cell-edge mobile stations deemed to be located at a cell edge between the first cell (62) and a neighboring cell (61), an updated value of a radio parameter capable of changing coverage of the first cell (62).

Abstract: Provided is a technique of calculating a proper margin according to the area or a radio propagation estimation method in the area design of wireless communication using a radio propagation simulator. From a storage part wherein information relating to positions where deterioration of a communication quality or a radio quality is confirmed and information relating to the radio conditions at the positions are associated with each other, a margin design system extracts positions where the radio conditions are equal, estimates the radio quality at the positions by the radio propagation simulator, and calculates the margin of a radio quality estimated value on the basis of the estimated radio quality.

Abstract: A radio terminal, which is operative to perform a measurement on the basis of a measurement condition designated by a radio network and to report the result of the measurement, comprises: a position-determination precision calculating means for calculating a position-determination precision of the radio terminal; a required position-determination precision holding means for holding a required position-determination precision related to a condition of position-determination precision; and a measurement reporting control means for comparing the required position-determination precision with the calculated position-determination precision and for controlling the execution of at least one of the radio terminal's measurement and the radio terminal's reporting of the measurement result to the radio network.

Abstract: A wireless communication system comprises: a setting notifying means for notifying, to a radio terminal, setting information related to at least one of the radio terminal's collection of measurement information and the radio terminal's reporting of the measurement information to a radio network; a status notifying means for notifying, to the radio network, a status related to at least one of the radio terminal's collection of the measurement information and the radio terminal's reporting of the measurement information; and a re-establishing means for receiving the status and determining whether to re-establish the setting information.

Abstract: A handover properties estimation system includes a moving-route extraction unit which extracts moving routes which pass through a handover area or a neighboring area by using map information of the handover area and the neighboring area. The handover area is an area in which a handover process occurs between cells in a mobile communication system. The system further includes a moving-route handover properties calculation unit for calculating handover properties of the moving routes extracted by the moving-route extraction unit, by using radio-wave environment information of the moving routes.

Abstract: A mobile terminal includes a measuring unit that measures at least the moving speed of the self terminal and communication quality of wireless communication, and a communication unit that transmits terminal information including moving speed information and communication quality information. A quality monitoring apparatus (90) includes a terminal information collection unit (901) that collects the terminal information from at least one mobile terminal, and a terminal information classification unit (903) and a quality analyzing unit (904) that monitor communication quality in a predetermined target area for each moving speed range of the mobile terminal based on the collected terminal information.

Abstract: Provided is a technique of calculating a proper margin according to the area or a radio propagation estimation method in the area design of wireless communication using a radio propagation simulator. From a storage part wherein information relating to positions where deterioration of a communication quality or a radio quality is confirmed and information relating to the radio conditions at the positions are associated with each other, a margin design system extracts positions where the radio conditions are equal, estimates the radio quality at the positions by the radio propagation simulator, and calculates the margin of a radio quality estimated value on the basis of the estimated radio quality.

Abstract: Provided is a radio quality estimation system for estimating radio quality in consideration of environment information which changes with the passage of time and for judging by when to implement the preventive measures of the quality deterioration by taking the quality deterioration in the future into consideration. The radio quality estimation system is characterized by comprising an environment information storage section for storing the environment information which affects the radio quality in a target area and which changes with the passage of time, a radio wave propagation analysis section for analyzing the propagation characteristics of radio waves, and a radio quality estimation section for estimating the radio quality at a point in the target area by using the analyzed propagation characteristics of the radio waves and the obtained environment information.

Abstract: Provided is a communication network quality analysis technique which can identify a network side communication device, a communication area, or a terminal which causes degradation of quality of the communication network detected by an abnormal communication quality index. The technique analyzes a recording content of a call process performed by the network side communication device and acquires a distribution of quality degradation amounts in respective hierarchies such as a terminal, a network communication device, or a communication area. Thus, the technique estimates a terminal, a network side communication device, or a communication area causing degradation of the communication quality according to a degree of quality degradation degree distribution bias considering the belonging relationship of the terminal, the network side communication device, and the communication area.

Abstract: A radio access network management device capable of estimating the resource utilization ratio of an additionally installed radio base station to predict the date on which the next additional installation is required. The radio access network management device comprises a means for obtaining traffic demand per unit area for existing radio cells around the position at which a radio base station is additionally installed from the coverage of the existing radio cells and the time series of the past communication traffic statistics, a means for estimating the coverage of the radio cells after the additional installation of the radio base station, a means for predicting the traffic demand of the radio cells after the additional installation thereof from the coverage and traffic demand per unit area, and a means for predicting future communication quality from the predicted traffic demand.

Abstract: In a wireless cell, the potential deterioration in quality is efficiently detected when the indication of abnormalities is weak. Provided are a step of calculating one or more radio qualities for each coverage area of a wireless cell; a step of measuring one or more network statistical qualities for each coverage area of the wireless cell; a step of making a pair of each network statistical quality and one or more radio qualities for each coverage area of each wireless cell; and a step of calculating, based on the pairs of each network statistical quality and one or more radio qualities for the coverage areas of the wireless cells, the correlation between each network statistical quality and one or more radio qualities.