Abstract: A network entity (5) sends, to a mobility management entity (6) or a subscriber server (9), a request message in order to configure the mobility management entity (6) to report a second identifier to be used by a radio access network node (2) for identifying a radio terminal (1). Further, the network entity (5) receives the second identifier from the mobility management entity (6) directly or through the subscriber server (9) and communicates with the radio access network node (2) by using the second identifier. It is thus, for example, possible to allow an MEC server (or an MEC application hosted on the MEC server) and the radio access network (RAN) node to directly exchange therebetween control messages regarding a specific radio terminal.

Abstract: A traffic controller (8) receives, from a traffic monitor (7), a first control message generated in response to an increase in a total transmission rate of a plurality of packet flows sent from a plurality of wireless terminals (1) to a specific external network. The controller (8) determines, based on an evaluation criterion received from a criteria manager (6), one or more packet flows on which traffic shaping is to be imposed. In response to the first control message, the controller (8) controls a base station within a RAN (2) or a packet transfer node within a mobile backhaul (30) to execute the traffic shaping. This, for example, contribute to adjusting traffic that passes through a cellular communication network based on a monitoring result of a total transmission rate of traffic sent from the cellular communication network to the external network.

Abstract: A network entity (5) sends, to a mobility management entity (6) or a subscriber server (9), a request message in order to configure the mobility management entity (6) to report a second identifier to be used by a radio access network node (2) for identifying a radio terminal (1). Further, the network entity (5) receives the second identifier from the mobility management entity (6) directly or through the subscriber server (9) and communicates with the radio access network node (2) by using the second identifier. It is thus, for example, possible to allow an MEC server (or an MEC application hosted on the MEC server) and the radio access network (RAN) node to directly exchange therebetween control messages regarding a specific radio terminal.

Abstract: A traffic controller (8) receives, from a traffic monitor (7), a first control message generated in response to an increase in a total transmission rate of a plurality of packet flows sent from a plurality of wireless terminals (1) to a specific external network. The controller (8) determines, based on an evaluation criterion received from a criteria manager (6), one or more packet flows on which traffic shaping is to be imposed. In response to the first control message, the controller (8) controls a base station within a RAN (2) or a packet transfer node within a mobile backhaul (30) to execute the traffic shaping. This, for example, contribute to adjusting traffic that passes through a cellular communication network based on a monitoring result of a total transmission rate of traffic sent from the cellular communication network to the external network.

Abstract: A base station includes a wakeup signal transmission part transmitting transmission signal information to a wireless terminal by wireless communication. The transmission signal information includes a wakeup signal starting a given function included by the wireless terminal. The wakeup signal transmission part transmits the transmission signal information including connection information in addition to the wakeup signal to the wireless terminal. The connection information is information for causing the wireless terminal of a destination of transmission of the wakeup signal to connect by wireless communication using the given function.

Abstract: A base station includes a wakeup signal transmission part transmitting transmission signal information to a wireless terminal by wireless communication. The transmission signal information includes a wakeup signal starting a given function included by the wireless terminal. The wakeup signal transmission part transmits the transmission signal information including connection information in addition to the wakeup signal to the wireless terminal. The connection information is information for causing the wireless terminal of a destination of transmission of the wakeup signal to connect by wireless communication using the given function.

Abstract: A radio communication system according to the present invention includes a base station apparatus 10 that performs data communication with a communication apparatus 100 by using a predetermined frequency band; a base station apparatus 20 that performs data communication with a communication apparatus 200 by using the same frequency band as the frequency band in the same coverage area as that of the base station apparatus 10; determination means 30 for acquiring identification information included in a connection request transmitted from the communication apparatus 100 or 200 by using the frequency band, and for determining to connect to the base station apparatus 10 when the identification information indicates the communication apparatus 100, and to connect to the base station apparatus 20 when the identification information indicates the communication apparatus 200.

Abstract: A wireless communication system comprises: first wireless base station apparatus that covers first cell; and second wireless base station apparatus that covers second cell that is wider than first cell and overlaps at least a portion of first cell, wherein: in a case of performing communication with mobile station terminal included in first cell, first wireless base station apparatus makes reference to communication quality of the second cell, judges whether or not wireless resource(s) of second wireless base station apparatus is to be reserved, and, when a judgment is made that reservation of wireless resource(s) is necessary, transmits wireless resource allocation request including necessary resource amount to second wireless base station apparatus; and in a case of receiving wireless resource allocation request from first wireless base station apparatus, second wireless base station apparatus allocates wireless resource(s) in accordance with necessary resource amount to first wireless base station apparatu

Abstract: A mobile communication system comprises: a first radio base station apparatus transmitting, after recovering from a service halt state and before starting to execute a stepwise cell area expansion, a notification including an instruction for a cell area reduction corresponding to the cell area expansion to a neighboring second radio base station apparatus; and a second radio base station apparatus reducing a cell area that has been expanded during the service halt state of the first radio base station apparatus, in accordance with the instruction for a cell area reduction included in the notification transmitted from the first radio base station apparatus.

Abstract: To provide a radio communication system capable of reducing the power consumption of a radio base station apparatus. A radio communication system according to the present invention includes a user apparatus (2) and a radio base station apparatus (1) that performs radio communication with the user apparatus (2). The radio base station apparatus (1) monitors a communication status of the user apparatus (2) present within a service area of the radio base station apparatus (1), and when there is no user apparatus (2) performing communication, intermittently transmits a signal that is to be transmitted from the radio base station apparatus (1) to the user apparatus (2). The intermittently-transmitted signal is, for example, a downward common channel signal. Further, the intermittent transmission is performed at regular intervals or random intervals.

Abstract: In order to synchronize timings of transmission through a radio channel for broadcast communication even when a plurality of base stations communicate independently of one another, a receiver 11 in a radio base station 10 receives broadcast information INFO1 transmitted from a different radio base station 40 through a radio channel CH1 for transmitting the broadcast information. A controller 12 specifies a radio channel CH2 used for broadcast communication by the different radio base station 40 and adjusts a timing of transmission through the radio channel CH2 for broadcast communication in its own radio base station 10 to be synchronized with a timing of transmission in the different radio base station 40, based on the broadcast information INFO1. A transmitter 13 transmits data through the radio channel CH2 for broadcast communication in accordance with the adjusted timing TA of transmission.

Abstract: The system of the present invention includes a first radio station and a plurality of second radio stations that communicate via a limited radio resource having a limited time slot and a limited frequency band allocated in advance. The first radio station performs control not to request the plurality of second radio stations to re-transmit transmission data when detecting a receive error in the transmission data from the plurality of second radio stations to the first radio station. Each of the plurality of second radio stations performs control, when detecting a receive error in transmission data from the first radio station to the second radio station, not to request the first radio station to re-transmit the transmission data in which the receive error has been detected, but to receive the transmission data re-transmitted according to a upper layer protocol from a communication partner radio station with which communication on the upper layer has already been established.

Abstract: A base transceiver station (200) that transmits same data to a plurality of mobile stations (300) using a common channel includes a maximum transmit power detector (41) that detects a maximum transmit power value at each spreading factor during transmission of the data from a transmit power of the data transmitted to the plurality of mobile stations (300) in cells controlled by the base transceiver station (200), and a transmit power determination unit (42) that determines a transmit power at each spreading factor based on the relation between the maximum transmit power values detected and the spreading factors.

Abstract: A base station apparatus includes a buffer for temporarily storing data to be transmitted to a mobile station in a data queue corresponding to the mobile station, and a controller for performing control of retransmitting data whose retransmission is requested by a mobile station by selecting the data from a data queue corresponding to the mobile station. When retransmitting data to a mobile station, if the data storage amount in a data queue corresponding to the mobile station is equal to or larger than a predetermined threshold value, the controller performs control of making the error resistance on wireless propagation higher than that of the last data transmission to the mobile station. This makes it possible to increase the retransmission data reception success probability of a mobile station, and suppress the occurrence of retransmission control by an upper layer.

Abstract: A base transceiver station (200) that transmits same data through a common channel shared by a transmission path includes a cell total transmit power detector (41) that detects, with respect to each of a plurality of cells, a total amount of the transmit power for transmitting the data to mobile stations (300) located inside each of the cells, a relative value information receiver (42) that receives relative value information for relatively correcting the total transmit power, from the base transceiver station controller, and a weight adjustment and power determination unit (43) that corrects the total transmit power for transmitting the data with respect to each cell, based on the relative value information received by the relative value information receiver and the total transmit power detected by the cell total transmit power detector, and determines a modified total transmit power.

Abstract: A radio communication system according to the present invention includes a base station apparatus 10 that performs data communication with a communication apparatus 100 by using a predetermined frequency band; a base station apparatus 20 that performs data communication with a communication apparatus 200 by using the same frequency band as the frequency band in the same coverage area as that of the base station apparatus 10; determination means 30 for acquiring identification information included in a connection request transmitted from the communication apparatus 100 or 200 by using the frequency band, and for determining to connect to the base station apparatus 10 when the identification information indicates the communication apparatus 100, and to connect to the base station apparatus 20 when the identification information indicates the communication apparatus 200.

Abstract: A wireless communication system comprises: a plurality of first radio base stations that each includes data in frames and uses a frequency in a predetermined frequency band to transmit the frames to a first terminal that is present in its own cover are; and a second radio base station that has as its own cover area the same areas as the cover areas of the plurality of first radio base stations and that includes data in frames and uses a frequency in the predetermined frequency band to transmit the frames to a second terminal that is present in its own cover area. Each of the first radio base stations reports to the second radio base station the transmission timing of frames to the first terminal, and the second radio base station synchronizes the transmission timing of transmitting frames to the second terminal with the reported transmission timing.

Abstract: A mobile communication system comprises: a first radio base station apparatus transmitting, after recovering from a service halt state and before starting to execute a stepwise cell area expansion, a notification including an instruction for a cell area reduction corresponding to the cell area expansion to a neighboring second radio base station apparatus; and a second radio base station apparatus reducing a cell area that has been expanded during the service halt state of the first radio base station apparatus, in accordance with the instruction for a cell area reduction included in the notification transmitted from the first radio base station apparatus.

Abstract: A wireless communication system comprises: first wireless base station apparatus that covers first cell; and second wireless base station apparatus that covers second cell that is wider than first cell and overlaps at least a portion of first cell, wherein: in a case of performing communication with mobile station terminal included in first cell, first wireless base station apparatus makes reference to communication quality of the second cell, judges whether or not wireless resource(s) of second wireless base station apparatus is to be reserved, and, when a judgment is made that reservation of wireless resource(s) is necessary, transmits wireless resource allocation request including necessary resource amount to second wireless base station apparatus; and in a case of receiving wireless resource allocation request from first wireless base station apparatus, second wireless base station apparatus allocates wireless resource(s) in accordance with necessary resource amount to first wireless base station apparatu

Abstract: To provide a radio communication system capable of reducing the power consumption of a radio base station apparatus. A radio communication system according to the present invention includes a user apparatus (2) and a radio base station apparatus (1) that performs radio communication with the user apparatus (2). The radio base station apparatus (1) monitors a communication status of the user apparatus (2) present within a service area of the radio base station apparatus (1), and when there is no user apparatus (2) performing communication, intermittently transmits a signal that is to be transmitted from the radio base station apparatus (1) to the user apparatus (2). The intermittently-transmitted signal is, for example, a downward common channel signal. Further, the intermittent transmission is performed at regular intervals or random intervals.