51 results about "Connectionless communication" patented technology

A RF-ID based wireless terminal has shortened session set-up and user identification time for conducting transactions with interactive service applications. The wireless terminal includes a terminal identification number and a user identification as a RF-ID tag. A RF-ID reader transmits a RF field for detecting the RF-ID tag in the terminal and provides an output signal when the terminal is within the reader field. The output signal establishes a connectionless communication to an access point or other terminal which initiates a wireless paging operation, in lieu of conducting a terminal discovery process, based upon the content of the RF-ID tag. The terminal initiates a wireless session between the terminal and the access point or terminal for conducting transactions with a service application linked to the access point or terminal.

A communication structure and method which allows connection-like and connectionless communications to be provided on a multiplexed link is provided. The structure and method can make efficient use of available transmission capacity and / or network resources while providing for both types of communication. Connection-like communications can be provided by a channel having allocated bandwidth dedicated to the communication while connectionless communication can be provided by a shared channel through which data can be transmitted to subscribers. In an embodiment, the shared channel transmits frames of packets addressed to one or more of the subscribers. The frames can have a robustly packaged header that can be received by all subscriber stations serviced by the base station while payload data in the frame can be packaged with a level of robustness appropriate for the intended subscriber station. Different packagings can include different encoding and / or modulation of the payload data. The allocation of bandwidth between the dedicated channels and the broadcast channel can be fixed, or can be managed to meet network or network operator requirements. The structure and method can also be managed by the network operator to permit prioritization of some communications over others. In another embodiment, two or more shared channels are provided. In another embodiment, dedicated channels can be created with different amounts of bandwidth and / or can employ modulation and / or encoding selected according to the reception-quality of the recipient subscriber station.

The quality and performance of the connectionless communications system are improved. When a BOM is received, the destination address DA of the L3-PDU stored in the payload of the BOM is retrieved, and the tag information is obtained from the DA (S11). The output message identifier MID is reserved (S12), and the tag information and output MID are assigned to the BOM (S13). Then, the tag information and output MID are written to the table. When a COM is received, the tag information and output MID are retrieved using the MID of the COM as a key, and the information is provided for the COM (S31 and S32). When an EOM is received, the tag information and output MID are retrieved using the MID of the EOM as a key, and the information is provided for the EOM (S41 and S42). Then, the output MID is released (S43).

A communications scheme for configuring a network comprising a plurality of connected switching apparatus, each switching apparatus having functionality for implementing connectionless forwarding of received communications traffic to selectively provide a connection-oriented service for said received communications traffic, the scheme comprising: determining in a control plane index header field values to identify connectionless traffic received at switching apparatus for which a connection is to be established between a source node and a destination node; providing each switching apparatus necessary to implement the connection with information from the control plae, the information enabling the data forwarding tables of the switching to be populated with said index header field values in association with egress ports of the switching apparatus; and disabling all other functionality on said switching apparatus capable of populating the data forwarding tables with index information associated with said egress ports of the switching apparatus necessary to establish said connection.

A method and system for monitoring, controlling and diagnosing operation of a machine such as a business office machine including a facsimile machine, a copier, and a printer. When the speed of communication between the remote device and machine is not urgent, a connectionless mode of communication may be used. The form of connectionless communication is an electronic mail message transmitted over the Internet. However, when a condition needs urgent action, a direct connection is used for communication such as communication via a telephone or ISDN line. The information obtained from the machine is stored in one or more data bases within a company and information of the machine is shared between a service department, engineering and design department, manufacturing department, and marketing department. As communication over the Internet via electronic mail is not secure, the connectionless-mode messages transmitted using Internet electronic mail are encrypted.

<heading lvl="0">Abstract of Disclosure< / heading> The object of the present invention is accommodating local connectionless information (data that is immediately transferred without establishing a path to a receive side), such as LAN data in a local area network, by an asynchronous transfer mode (ATM) network using a connection-oriented communication system (which makes data transfers after verifying that a path to the receive side has been established), thereby performing efficient, fast routing of connectionless information. A connectionless communication system of the present invention is equipped with connectionless information cell assembly / disassembly means (30) for bi-directional conversion between variable-length connectionless information and fixed-length connectionless cells, routing control means (31) for analyzing a destination address of information in connectionless cells and controlling the routing of the connectionless cells; and an ATM network (32) for connecting the connectionless information cell assembly / disassembly means (30) and the routing control means (31) by a permanent virtual channel serving as a fixed path and connecting the routing control means together by a virtual channel serving as a semi-fixed path, whereby connectionless information is segmented into connectionless cells and the connectionless information is exchanged within the ATM network in connectionless cell units.

A communication structure and method which allows connection-like and connectionless communications to be provided on a multiplexed link is provided. The structure and method can make efficient use of available transmission capacity and / or network resources while providing for both types of communication. Connection-like communications can be provided by a channel having allocated bandwidth dedicated to the communication while connectionless communication can be provided by a shared channel through which data can be transmitted to subscribers. In an embodiment, the shared channel transmits frames of packets addressed to one or more of the subscribers. The frames can have a robustly packaged header that can be received by all subscriber stations serviced by the base station while payload data in the frame can be packaged with a level of robustness appropriate for the intended subscriber station. Different packagings can include different encoding and / or modulation of the payload data. The allocation of bandwidth between the dedicated channels and the broadcast channel can be fixed, or can be managed to meet network or network operator requirements. The structure and method can also be managed by the network operator to permit prioritization of some communications over others. In another embodiment, two or more shared channels are provided. In another embodiment, dedicated channels can be created with different amounts of bandwidth and / or can employ modulation and / or encoding selected according to the reception-quality of the recipient station.

A method and system for retransmitting messages using an alternate mode of communication when an original mode of communication is determined to be unsuccessful. A message is first transmitted using a connectionless-mode of communication such as by using an Internet electronic mail message. A request for acknowledgment of receipt of the message and / or individual operators within the message is requested. If the acknowledgment of receipt of the message is not received within an appropriate time determined based on an urgency level of the reply, the message is retransmitted using a more reliable mode of communication such as a connection-mode of operation which includes a direct telephone connection over a public telephone network using a modem, using an ISDN line, or a cable with a cable modem.

A method of forwarding traffic in a connectionless communications network from a source location to a destination location is disclosed. The traffic is associated with a predetermined category of transmission service. The method involves assigning a principal path to the traffic. The principal path operatively connects the source and destination locations. The principal path is determined on the basis that transmission of the traffic from the source location to the destination location does not exceed a specified maximum delay for transmission. An alternate path is also assigned to the traffic. The alternate path is selected on the basis that the alternate path does not exceed a specified maximum delay for involving the alternate path in order to forward the traffic along the alternate path in the event the principal path is unavailable for forwarding the traffic.

A monitoring camera device includes a imaging unit (11) for generating image data on a monitoring object, a dynamic image extraction unit (12) for extracting image data from the image data for a predetermined frame cycle, a motion image encoder (13) for generating motion image data obtained by compressing / encoding the extracted image data, a change detection unit (17) for outputting a change detection signal indicating a change of the object, and a transmission processing unit (19) for switching between at least two types of communication protocol according to the change detection signal and performing data transmission processing. The transmission processing unit (19) transmits motion image data to the monitoring terminal device (40) via a network (30) according to a connectionless communication protocol if the change detection signal indicates that there is no change and according to a connection type communication protocol if the change detection signal indicates that there is a change. With this configuration, it is possible to provide a monitoring camera device and a monitoring system capable of appropriately transmitting an image required for judging whether a monitoring object is abnormal.

A method and system for providing connectionless configurations for stress testing timing and synchronization in data packet networks. Packet traffic of interest is transmitted through multiple interconnected switching nodes such that different packets can be transmitted over different paths through the switching nodes. The nodes can support background traffic in order to generate delays for the packets at each of the switching nodes. By allowing packets to use multiple paths in a single testing configuration, a connectionless packet flow can be utilized for adaptive packet timing recovery stress testing.

A method and system for providing connectionless configurations for stress testing timing and synchronization in data packet networks. Packet traffic of interest is transmitted through multiple interconnected switching nodes such that different packets can be transmitted over different paths through the switching nodes. The nodes can support background traffic in order to generate delays for the packets at each of the switching nodes. By allowing packets to use multiple paths in a single testing configuration, a connectionless packet flow can be utilized for adaptive packet timing recovery stress testing.

A method of providing call admission control which does not require using MIDCOM protocol methods, Packetcable protocols or COPS-RSVP s approaches is described which is simple to implement, cost-effective and which is able to deal with particular situations such as conference calls. Each link in a communications network over which it is required to perform call admissions control is provided with a middlebox connected at each end of that link such that admissions control can be carried out at one end of the link. Call services are provided by Call Servers, each of which has access to a database containing pre-specified information about all middleboxes in that call server's realm. The database also has information about maximum bandwidths for the link associated with each middlebox. The call servers are used to keep a running tally of the amount of VoIP call bandwidth associated with each middlebox on the edge of a low-bandwidth link, and to accept or refuse calls on the basis of the bandwidth information on a per-call basis.