Abstract:
UE 100-1 simultaneously transmits or receives a plurality of radio signals SG1 and SG2 associated with a plurality of radio communication apparatuses. The UE 100-1 transmits power difference information to eNB 200. The plurality of radio signals SG1 and SG2 has different frequencies from each other. The power difference information is information relating to a maximum power difference that is allowed in the plurality of radio signals SG1 and SG2.
Abstract:
eNB 200 sets discovery resources that are radio resources used for transmission or reception of a discovery signal for performing the D2D communication. The eNB 200 controls a quantity (time length) of the discovery resources based on information on UE 100 existing in a target area that is a setting target area of the discovery resources.
Abstract:
A communication control method according to a first aspect includes: a step A of acquiring, by a user terminal that supports a cellular communication and a WLAN communication, access point location information on a geographical location of a WLAN access point; a step B of transmitting, from the user terminal to a cellular network, the access point location information; and a step C of acquiring, by a cellular base station included in the cellular network, the access point location information.
Abstract:
A mobile communication system according to an embodiment supports a cellular communication in which a data path passes through a network and a D2D communication that is a direct device-to-device communication in which a data path does not pass through the network. The mobile communication system comprises: an eNB 200 included in the network and configured to transmit D2D broadcast information; and a UE 100 configured to perform the D2D communication after receiving the D2D broadcast information from the eNB 200. The D2D broadcast information is information that enables the D2D communication even though the UE 100 is in a specific state in which a connection with the network is not established. The UE 100 performs the D2D communication in the specific state on the basis of the D2D broadcast information.
Abstract:
A mobile communication system according to the embodiment supports cellular communication in which a data path passes through a network and D2D communication that is direct device-to-device communication in which a data path does not pass through the network. A frequency division multiplexing scheme is applied to the cellular communication and a code division multiplexing scheme is applied to the D2D communication. The network assigns a spread code having orthogonality to a user terminal in response to a request from the user terminal. The user terminal performs the D2D communication by using the spread code assigned by the network.
Abstract:
A communication control method for performing an offload from a cellular RAN to a wireless LAN, includes a step of performing, by a user terminal, a network selection operation to select an appropriate access network with which a traffic of the user terminal is exchanged, from the cellular RAN and the wireless LAN on the basis of determination parameters. The determination parameters comprises at least one of: a cellular network status that is a network status concerning the cellular RAN; a wireless LAN network status that is a network status concerning the wireless LAN; a cellular radio link status that is a radio link status between the cellular RAN and the user terminal; and a wireless LAN radio link status that is a radio link status between the wireless LAN and the user terminal.
Abstract:
A mobile communication system comprises: a user terminal that receives a desired wave signal from a serving cell while receiving an interference wave signal from a neighboring cell adjacent to the serving cell; and a base station that manages the serving cell. The base station comprises: a controller that generates an interference replica signal corresponding to the interference wave signal and superposes the interference replica signal on the desired wave signal; and a transmitter that transmits the desired wave signal superposed with the interference replica signal to the user terminal. The controller generates the interference replica signal such that the interference replica signal cancels the interference wave signal in a location of the user terminal. The interference replica signal acts as a disturbing signal, which disturbs demodulation of the desired wave signal, in a location other than the location of the user terminal.
Abstract:
A communication control method used in a cellular mobile communication system which comprises a user terminal performing inter-terminal communication that is direct radio communication capable of being performed between user terminals in a state in which a radio connection with a network is established, comprises a step of continuously transmitting, by the user terminal, a search signal for discovering a communication partner of the inter-terminal communication in a constant period when starting searching for the communication partner.
Abstract:
A user equipment comprising a receiver configured to receive a radio resource control (RRC) Release message from a serving cell, wherein the RRC Release message includes an indication causing the user equipment to transition from an RRC connected state to a specific state, the specific state being a state in which a RRC connection is suspended for the user equipment, and a controller. The controller is configured to cause the user equipment to transition from the RRC connected state to the specific state in response to receiving the RRC Release message, perform a cell reselection operation when the user equipment is in the specific state, and perform, when the user equipment in the specific state, an operation of causing the user equipment to transition from the specific state to an RRC idle state in response to reselecting a predetermined cell.
Abstract:
A user equipment, method used in user equipment, and apparatus for controlling a user equipment operate to receiving a connected mode DRX parameter configured by a base station, and transmit to the base station a message including information indicating a connected mode DRX parameter preferred by the user equipment. The connected mode DRX parameter preferred by the user equipment includes at least one of DRX-InactivityTimer, DRX-ShortCycle, and DRX-ShortCycleTimer.