Abstract: According to one embodiment, a semiconductor device includes a semiconductor element on a substrate. A first surface of the semiconductor element faces away from the substrate and a second surface faces the substrate. A first surface electrode is on the first surface of the semiconductor element. A bonding wire is connected to the first surface electrode at a bonding portion. A first sealing member covers the bonding portion. A second sealing member covers a portion of the first surface electrode outside the bonding portion. A third sealing member covers the first sealing member and the second sealing member.

Abstract: An object is to provide a communication system in which there are no restrictions on a communicable area and it is not necessary to install communication software on a wireless device. A communication system according to the present invention is configured so that the functions of a wireless access point are separated into a front-end unit on a wireless terminal side and a back-end side on the Internet side, radio signal processing functions supporting a wireless scheme of the wireless terminal are deployed only on the back end, and only relatively simple processing functions such as E/O conversion are deployed on the front end near the wireless terminal 311.

Abstract: To solve the above problem, the present invention aims to provide a controller, a communication system, a control method, and a program capable of performing transmission scheduling to avoid mutual interference in a plurality of wireless networks. A controller 13 according to the present invention includes a scheduler SCH3 that calculates a transmission schedule for packets to be transmitted from buffers (FB1, FB2) on the basis of the amount of packets stored in a database DB in each predetermined period, and, when calculating the transmission schedule, imposes a restriction to prevent a total amount of packets to be transmitted from all the buffers (FB1, FB2) included in a network NW #j from exceeding the product of the throughput of each network NW #j and the predetermined period.

Abstract: An object of the present disclosure is to enable band allocation on a traffic flow basis even in a real wireless network in which a terminal repeats connection/disconnection in association with movement of a person or the like. The present disclosure relates to a control system for controlling traffic in a wireless network. The control system includes a controller that performs transmission control on a terminal and an access point. Before the access point establishes a connection with the terminal, the controller establishes a connection with the terminal using a connection sequence according to a protocol available in the wireless network, and acquires, from the terminal, information about a node number and a flow-based buffer of the terminal.

Abstract: An object of the present disclosure is to perform appropriate communication quality control even when a terminal out of management of a controller is connected to an access point. The present disclosure is a control system for controlling traffic of a wireless network, the control system including: a terminal and an access point that mutually transmit a packet via the wireless network; and a controller that performs transmission control with respect to the terminal and the access point, in which the controller notifies the access point of information of a terminal under management of the own device, and the access point collates information of the terminal a notification of which has been given with information of a terminal connected to the own device, and suppresses notification of transmission permission to an unmanaged terminal different from a terminal under management of the controller.

Abstract: The present disclosure is a base station system S that connects each of base station functional units that provides each of radio schemes and each of antenna units in each of provision areas via an optical fiber section, the base station system including passive light functional units disposed between each of base station functional units and each of antenna unit and including each downlink signal output port to which each downlink signal wavelength is allocated and each uplink signal output port to which each uplink signal wavelength is allocated and an optical switch disposed between each of the antenna units and the passive light functional units, accommodates some of each of the radio schemes, and switches to which one of the provision areas the some of the radio schemes are provided.

Abstract: An object of the present disclosure is to perform appropriate communication quality control even when a terminal out of management of a controller is connected to an access point. The present disclosure is a control system for controlling traffic of a wireless network, the control system including: a terminal and an access point that mutually transmit a packet via the wireless network; and a controller that performs transmission control with respect to the terminal and the access point, in which the controller notifies the access point of information of a terminal under management of the own device, and the access point collates information of the terminal a notification of which has been given with information of a terminal connected to the own device, and suppresses notification of transmission permission to an unmanaged terminal different from a terminal under management of the controller.

Abstract: An object is to provide a communication system in which there are no restrictions on a communicable area and it is not necessary to install communication software on a wireless device. A communication system according to the present invention is configured so that the functions of a wireless access point are separated into a front-end unit on a wireless terminal side and a back-end side on the Internet side, radio signal processing functions supporting a wireless scheme of the wireless terminal are deployed only on the back end, and only relatively simple processing functions such as E/O conversion are deployed on the front end near the wireless terminal 311.

Abstract: An object is to provide a communication apparatus, a communication method, and a program capable of avoiding an increase in network load when input traffic continues to be large and a communication delay when input traffic is very small. A communication apparatus according to the present invention prepares three token buckets and can transfer, discard, or hold a packet in accordance with the amount of tokens in each token bucket. This enables the communication apparatus to operate so as not to exceed a set maximum bandwidth when large traffic is received for the delay guarantee shaping. Further, When the maximum bandwidth is exceeded, the communication apparatus can select whether to discard a packet to prioritize a delay guarantee or to hold a packet to prioritize no loss of packets. Furthermore, the communication apparatus can immediately transmit a packet without increasing a communication delay when input traffic is very small.

Abstract: An object of the present disclosure is to continuously and easily grasp a communication quality such as RTT of application communication itself without depending on a protocol type. A communication system of the present disclosure holds a DPI rule for each application in a DPI rule management server in advance, duplicates a packet of a designated application extracted based on a filtering rule for extracting the packet, extracts information from the packet based on a DPI rule for the application acquired from the DPI rule management server, and calculates a communication quality based on the extracted information.

Abstract: The present disclosure aims to make it possible to simultaneously establish communication between many freely-selected radio terminals without using a complex relay network or a plurality of radio relays. The present disclosure is a communication network system including: a plurality of optical-radio converters 521-1 to 521-n that convert a radio signal and an optical fiber radio signal into each other; and a path controller that is connected to the plurality of optical-radio converters 521-1 to 521-n through optical fiber transmission lines 531-1 to 531-n, receives input of an optical fiber radio signal transmitted from any optical-radio converter of the plurality of optical-radio converters 521-1 to 521-n from the optical fiber transmission line connected to the optical-radio converter, and outputs the optical fiber radio signal to the optical fiber transmission line connected to a set optical-radio converter of the plurality of optical-radio converters 521-1 to 521-n.

Abstract: An object of the present disclosure is to reduce traffic burstiness in a TCP without causing a window size expansion delay and a decrease in maximum throughput. A system of the present disclosure is a communication system for transmitting a packet from a transmission terminal to a reception terminal, the communication system including a congestion control unit that performs congestion control of a packet transmitted from the transmission terminal, and a delay control shaping unit that changes a set value of delay control shaping based on a setting of a congestion window size on which the congestion control unit performs congestion.

Abstract: It is an object to the present invention to provide a control system, a control method, a controller, and a program which allow a band allocated to each of traffic flows to be guaranteed. According to the present invention, terminals and an access point each store packets to be transmitted to buffers therein on a traffic flow basis and notify the controller of the amount of stored packets, the controller determines transmission time and a transmission amount of packets on a traffic flow basis according to the notified packet amount to notify a corresponding terminal and the access point of the time and amount, and the terminal and the access point transmit packets according to the notified transmission time and transmission amount.

Abstract: An object is to provide a network management system and the like capable of being introduced into an existing network to ascertain an instantaneous traffic variation in the network. The scheme of the present invention uses a shaping function included by each edge apparatus. The shaping function controls packet transmission in a millisecond order. The network management apparatus according to the present invention adds up the amount of transmitted packets for each control period reported by each edge apparatus and estimates this as an instantaneous traffic amount in the network. In the scheme, it is only necessary to add one network management apparatus to an existing network and to cause each edge apparatus to report the amount of transmitted packet to the network management apparatus.

Abstract: The present disclosure aims to make it possible to simultaneously establish communication between many freely-selected radio terminals without using a complex relay network or a plurality of radio relays. The present disclosure is a communication network system including: a plurality of optical-radio converters 521-1 to 521-n that convert a radio signal and an optical fiber radio signal into each other; and a path controller that is connected to the plurality of optical-radio converters 521-1 to 521-n through optical fiber transmission lines 531-1 to 531-n, receives input of an optical fiber radio signal transmitted from any optical-radio converter of the plurality of optical-radio converters 521-1 to 521-n from the optical fiber transmission line connected to the optical-radio converter, and outputs the optical fiber radio signal to the optical fiber transmission line connected to a set optical-radio converter of the plurality of optical-radio converters 521-1 to 521-n.

Abstract: An object is to provide a communication apparatus, a communication method, and a program capable of avoiding an increase in network load when input traffic continues to be large and a communication delay when input traffic is very small. A communication apparatus according to the present invention prepares three token buckets and can transfer, discard, or hold a packet in accordance with the amount of tokens in each token bucket. This enables the communication apparatus to operate so as not to exceed a set maximum bandwidth when large traffic is received for the delay guarantee shaping. Further, When the maximum bandwidth is exceeded, the communication apparatus can select whether to discard a packet to prioritize a delay guarantee or to hold a packet to prioritize no loss of packets. Furthermore, the communication apparatus can immediately transmit a packet without increasing a communication delay when input traffic is very small.

Abstract: In a ring redundant communication path control method, each of transfer apparatuses periodically transmits an inspection frame for inspecting a communication path, detects a failure of the communication path when the inspection frame is not received for a fixed time, transmits a non-arrival notification frame for notifying that the inspection frame has not arrived yet, and detects a failure of the communication path when the non-arrival notification frame is received.

Abstract: In a variable stroke internal combustion engine, by determining the relationships of a connecting point (D) between a first link (4) and second link (5) and a connecting point (B) between the second link (5) and a control link (12) with respect to a center (A) of a crankpin (9) to be such that ?D<?B holds over an entire rotational angle of the crankshaft, where ?D is the distance between D and A and ?B is the distance between B and A, an adequate durability of the engine can be ensured without increasing the weight thereof.

Abstract: In a ring redundant communication path control method, each of transfer apparatuses periodically transmits an inspection frame for inspecting a communication path, detects a failure of the communication path when the inspection frame is not received for a fixed time, transmits a non-arrival notification frame for notifying that the inspection frame has not arrived yet, and detects a failure of the communication path when the non-arrival notification frame is received.

Abstract: An output port circuit is provided for a router apparatus which routes and transmits a received packet. Each flow is constituted by continuous packets and belongs to a bandwidth-guaranteed class or a best-effort class. A controller controls storage and reading of a packet into and from a storage unit. Upon allocating a basic volume that is a criterion of a memory size stored in the storage unit to each flow to which the packet to be transmitted belongs, the controller manages the basic volume of each flow of the packet belonging to the bandwidth-guaranteed class by individually allocating the basic volume by the memory size required by each flow, and manages the basic volume of each flow of the packets belonging to the best-effort class by collectively allocating the memory size obtained by subtracting a sum of respective basic volumes allocated to the bandwidth-guaranteed class from an entire memory size.