Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.

Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.

Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.

Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.

Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.

Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.

Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) is connected with a macro cell configured by a MeNB and a small cell configured by a SeNB, so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC via an MME, at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.

Abstract: In a communication system of the present invention, a HeNB measures interference in Step ST41 in an energy saving mode. When judging to have detected the interference by a UE during communication with an eNB in Step ST42, the HeNB cancels the energy saving mode and moves to a normal mode in Step ST43 and starts issuing a pilot signal in Step ST44. When the UE judges to have detected the pilot signal in Step ST23 and reports the judgment results to the eNB in Step ST24, in Steps ST25 to ST32, a handover process from the eNB to the HeNB is performed for the UE.

Abstract: In a communication system of the present invention, a HeNB measures interference in Step ST41 in an energy saving mode. When judging to have detected the interference by a UE during communication with an eNB in Step ST42, the HeNB cancels the energy saving mode and moves to a normal mode in Step ST43 and starts issuing a pilot signal in Step ST44. When the UE judges to have detected the pilot signal in Step ST23 and reports the judgment results to the eNB in Step ST24, in Steps ST25 to ST32, a handover process from the eNB to the HeNB is performed for the UE.

Abstract: A communication system is provided that can improve the communication capability of a communication terminal device in the case where a large number of small cells in addition to a macro cell are installed and operated. A communication terminal device (UE) (105) is connected with a macro cell configured by a MeNB (103) and a small cell configured by a SeNB (104), so that dual connectivity is performed. When receiving information for small cells, for example, emergency information from a CBC (101) via an MME (102), at least one cell of the macro cell and the small cell notifies the communication terminal device connected with the at least one cell of the information for small cells.

Abstract: In a communication system of the present invention, a HeNB measures interference in Step ST41 in an energy saving mode. When judging to have detected the interference by a UE during communication with an eNB in Step ST42, the HeNB cancels the energy saving mode and moves to a normal mode in Step ST43 and starts issuing a pilot signal in Step ST44. When the UE judges to have detected the pilot signal in Step ST23 and reports the judgment results to the eNB in Step ST24, in Steps ST25 to ST32, a handover process from the eNB to the HeNB is performed for the UE.

Abstract: In a communication system, a HeNB measures interference in an energy saving mode. When judging to have detected the interference by a UE during communication with an eNB, the HeNB cancels the energy saving mode and moves to a normal mode and starts issuing a pilot signal. When the UE judges to have detected the pilot signal and reports the judgment results to the eNB, a handover process from the eNB to the HeNB is performed for the UE.

Abstract: In a communication system, a HeNB measures interference in an energy saving mode. When judging to have detected the interference by a UE during communication with an eNB, the HeNB cancels the energy saving mode and moves to a normal mode and starts issuing a pilot signal. When the UE judges to have detected the pilot signal and reports the judgment results to the eNB, a handover process from the eNB to the HeNB is performed for the UE.

Abstract: In a mobile communication system, a mobile station is configured to obtain data quality information, and provides the obtained data quality information to a base station A when it is quality information about data from the base station A, and provides the data quality information to a base station B when it is quality information about data from the base station B. The base stations A and B are configured to provide a base station host apparatus with the quality information from the mobile station as historical information about the mobile station, and the base station host apparatus is configured to compare the pieces of quality information sent from the two base stations, select one base station with better quality, instructs it to communicate with the mobile station, and instructs the other not to communicate with the mobile station.

Abstract: A wireless communication technique capable of maintaining excellent communication quality. A wireless communication system includes base station equipment. The base station equipment is capable of performing wireless communication with a plurality of mobile units. The base station equipment detects the mobile units which are not synchronized with the base station equipment. Then, the base station equipment limits the transmission power to the mobile units detected.