摘要:
The communication system supports reservation of network resources. The base stations relay packets among the terminals, and perform priority control based on the priority set to the packets. In the terminal, the communication-managing table stores communication information of own terminal and a partner thereof. The packet-transmitting unit, setting priority to the packets, transmits the packets. When link condition of own terminal change, the link-managing unit updates, in order to prevent from quality deterioration of the other terminals, the priority of each of the packets whose source terminal is the own terminal.
摘要:
Access from a terminal of an outside network to a server of an inside network is put under control. A repeater and the server permit a packet transmission from the terminal to the server under limited conditions. When the server acknowledges connection for the permitted packet, the transmission conditions for packets to be sent to the server are loosened. After then, packet transmission between the terminal and the server is controlled under the loosened transmission conditions. As for encrypted packets, the server decodes the encrypted packets and notifies the relevant information to the repeater.
摘要:
The present invention includes a repeater and a server for controlling access, from a terminal of an outside network, to the server of an inside network. The repeater and the server permit a packet transmission from the terminal to the server under limited conditions. When the server acknowledges a connection for the permitted packet, transmission conditions for packets to be sent to the server are loosened. Subsequently, packet transmission between the terminal and the server is controlled under the loosened transmission conditions. As for encrypted packets, the server decodes the encrypted packets and notifies the repeater of relevant information.
摘要:
Access points for supporting wireless communications, a packet transmission device, and terminals for handing-over between service areas are provided. An existing terminal is provided with respect to this access point for performing a Quality of Source (QoS) guarantee. Accordingly, when a new terminal is handed over to be engaged in wireless communications with this access point, the priority of the packet associated with the existing terminal and/or new terminal is changed.
摘要翻译:提供用于支持无线通信的接入点,分组传输设备和用于在服务区域之间切换的终端。 相对于该接入点提供现有的终端来执行源(Quality of Source,QoS)保证。 因此,当移交新终端以与该接入点进行无线通信时,改变与现有终端和/或新终端相关联的分组的优先级。
摘要:
A resource management server that manages information concerning the resource reservation status and the information of groups of all electronic equipments connected to hubs. When an electronic equipment is newly connected to a port of one of the hubs, the electronic equipment issues a resource request and the group information to the resource management server. The resource management server sets up a network path between the newly connected electronic equipment and the other electronic equipments belonging to the same group as the newly connected electronic equipment, and judges if the resource request can be accepted on the setup network path.
摘要:
A terminal comprises a packet receiving unit, a packet sending unit, a link-state detecting unit that detects a link-up to a switching device, a configuration-change notifying unit, and a resource reservation table. When the link-state detecting unit detects a link-up, the terminal notifies network configuration information and network resource reservation information to a management device. When a link state is changed, the management device can immediately manage the network based on the latest network configuration information and the latest network resource information.
摘要:
By transmitting such an extended Echo request packet that device setting information was written in a payload of an ICMP-Echo packet, to an terminal 10b equipped with ICMP function which does not has a special function, the extended Echo request packet collect device setting statuses of relay devices 110 equipped with extended Echo, and an extended Echo reply packet, which is a reply packet in which a payload of the extended Echo request packet was copied, conveys the compiled device setting statuses and device setting information to each device on a communication route, and thereby, it is possible to carry out a uniform device setting.
摘要:
The present invention provides improved relay equipment including at least one port, through which packet transfer is executable, an information-containing unit containing target-to-be-used information and availability information, in which the target-to-be-used information distinguishes the at least one port between a target port for use in the packet transfer and a non-target port therefor, but the availability information distinguishes the at least one port between an usable port for use in the packet transfer and an unusable port therefor, a determining unit operable to determine an available port for use in the packet transfer from the at least one port in accordance with the target-to-be-used information and the availability information, and a relaying unit operable to execute the packet transfer through the available port. The improved relay equipment according to the present invention allows for the transfer of only packets having a communication rate equal or smaller than a bandwidth of each transmission link, and packet transfer without packet delay and without packet discard is achievable.
摘要:
A justification/authentication personal certificate system stores in a remote database a counterpart of an identifier and a digital watermark contained in the personal certificate. The personal certificate includes the digital watermark embedded in an authentic image such as a facial photograph, a retinal scan, or a fingerprint. When the personal certificate is used, the authentic image is read from the personal certificate, and the digital watermark information is extracted. The digital watermark information and the identifier are compared with the counterparts stored in the database. If the extracted digital watermark information is identical to the information in the database, then the personal certificate is judged to be unjustifiable. In one embodiment, at least one of the identifier and digital watermark are changed each time the system justifies the personal certificate.
摘要:
An address management apparatus includes a storage unit for storing a table showing the correspondence between data link layer and network layer addresses, a first search unit for searching the table for an unused data link layer address, a second search unit for searching the table for a network layer address corresponding to a specified data link layer address, and an instruction unit for transmitting an instruction including the unused data link layer address to a terminal specified by the detected network layer address. The apparatus also includes an updation unit for updating the correspondence between the data link layer and the network layer addresses on the table according to the instruction, a detection unit for detecting the instruction to obtain the data link layer address, and a setting unit for setting the data link layer address obtained by the detection unit in the self terminal.