摘要:
Object: To provide a mechanism and a function of a system that can determine a communication method and the like effectively utilizing frequency resources, considering priority of each communication, in a cognitive communication network system of a frequency shared type or the like assuming that a given frequency band is shared by a plurality of systems in use.Solution: In a configuration in which a cognitive communication network system has a plurality of radio access networks 23 and a superior communication network 10 that provides a common platform at least to the radio access networks, in a plurality of base stations 23a on at least a part of the radio access network 23, base-station state obtaining means 232 that collect information relating to a state of the base station itself in the base station or a communication state and base-station communication reconfiguration managing means 231 that reconfigure at least one of either a selection of the base station to be used in the communication or a communication condition in the base station on the basis of the information collected by the base-station state obtaining means are provided.
摘要:
To provide a method of selecting an optimal base station for each application when accumulating communication quality in response to an application type for a base station and a communication terminal switches base stations. A communication quality database 31 is prepared by assigning a current location of a communication terminal device, a currently running application program and a communication quality when executing an application program. When making a new connection with a base station, the current application and location is used to select a base station having an optimal communication quality from the communication quality database 31. This mechanism may be provided in the communication terminal device or may be provided as a communication system including a server device.
摘要:
To reduce power consumption for scanning and maintain communication quality by reducing the time for scanning or connection when a wireless communication terminal switches between networks or base stations. A wireless communication terminal 1 enabling connection with a plurality of base stations disposed in different positions which includes a base station scanning unit 100 detecting and scanning a base station capable of communication at the current position of the wireless communication terminal, a simultaneous detection base station recording unit 101 recording simultaneously detected base stations as simultaneous detection information in a storage unit, a connection candidate extraction unit 102 and a first communication unit 103 performing communication by connection with the extracted connection candidate base station. Based on the simultaneous detection information, the connection candidate extraction unit 102 extracts a base station having the possibility of simultaneous detection with the currently connected base station as a connection candidate base station.
摘要:
A technique that can effectively utilize unused wireless link and realize high-quality wireless communication between a communication terminal and a base station and enables efficient distribution of radio resources over an entire wireless communication system is provided. A wireless communication system in which a base station and a communication terminal can conduct wireless communication by detecting a usable wireless link and changing a wireless link used for the connection is also provided. On the communication network side, in addition to a plurality of wireless communication networks and a base station, a server device is provided. Connection-method reconstruction management means for determining a connection method of the wireless communication on the basis of communication condition information including information on usable wireless link at current locations of the base station and the communication terminal and connection-method reconstruction control means for controlling the connection method of the wireless communication for the corresponding base station are provided.
摘要:
To reduce power consumption for scanning and maintain communication quality by reducing the time for scanning or connection when a wireless communication terminal switches between networks or base stations. A wireless communication terminal 1 enabling connection with a plurality of base stations disposed in different positions which includes a base station scanning unit 100 detecting and scanning a base station capable of communication at the current position of the wireless communication terminal, a simultaneous detection base station recording unit 101 recording simultaneously detected base stations as simultaneous detection information in a storage unit, a connection candidate extraction unit 102 and a first communication unit 103 performing communication by connection with the extracted connection candidate base station. Based on the simultaneous detection information, the connection candidate extraction unit 102 extracts a base station having the possibility of simultaneous detection with the currently connected base station as a connection candidate base station.
摘要:
To provide a method of selecting an optimal base station for each application when accumulating communication quality in response to an application type for a base station and a communication terminal switches base stations. A communication quality database 31 is prepared by assigning a current location of a communication terminal device, a currently running application program and a communication quality when executing an application program. When making a new connection with a base station, the current application and location is used to select a base station having an optimal communication quality from the communication quality database 31. This mechanism may be provided in the communication terminal device or may be provided as a communication system including a server device.
摘要:
Embodiments of the invention enable a large number of wireless communication networks to be efficiently used while the size of a device operated by a user is reduced and power is saved by providing a communication terminal whose connection with different wireless communication networks can be dynamically reconfigured. A communication terminal whose connection with a plurality of wireless communication networks can be dynamically reconfigured is provided with a data communication aggregation device, a communication application executing device, and a local communication path therebetween. The data communication aggregation device interfaces with the plurality of wireless communication networks and communicates with the communication application executing device through the local communication path. The communication application executing device executes an application for communicating with an outside communication network.
摘要:
A method in which communication quality of a base station is accumulated according to type of an application and when a communication terminal device switches a base station, an optimal base station for each application is selected is provided. A wireless communication device of the present invention is provided with priority notifying means storing priority information of communication conducted by the local device and notifying it to the other wireless communication devices so that the priority can be notified to the outside. A priority information collecting means collects the priority information notified by the other devices, and a priority information comparing means compares the priority information of the local device with the collected priority information. Wireless communication control means is provided so that as the result of comparison, if the priority of the other devices is higher than the priority of the local device, the wireless communication means is controlled.
摘要:
A technique that can effectively utilize unused wireless link and realize high-quality wireless communication between a communication terminal and a base station and enables efficient distribution of radio resources over an entire wireless communication system is provided. A wireless communication system in which a base station and a communication terminal can conduct wireless communication by detecting a usable wireless link and changing a wireless link used for the connection is also provided. On the communication network side, in addition to a plurality of wireless communication networks and a base station, a server device is provided. Connection-method reconstruction management means for determining a connection method of the wireless communication on the basis of communication condition information including information on usable wireless link at current locations of the base station and the communication terminal and connection-method reconstruction control means for controlling the connection method of the wireless communication for the corresponding base station are provided.
摘要:
Provided is a power control method, etc., in cognitive radio communication, by which power control can be effectively performed without a large indirect cost. In the power control method, a target value of SNR is estimated on the basis of the control information relating to interference. Subsequently, communication power used for the cognitive radio communication is adjusted on the basis of the estimated target value of SNR. Thereby, power control can be effectively performed without a large indirect cost.