Patent application number | Description | Published |
20080263213 | COMMUNICATION DEVICE AND CLIENT DEVICE - Relaying devices to share workload among them are disposed in the carrier equipment network. The relaying devices respectively relay an HTTP message between the mobile phone and the web server and store an upload data from the mobile phone. The relaying devices respectively transmit to the mobile phone, before or immediately after uploading data, an address to couple the mobile phone to them and an identifier to specify an upload data. Where line disconnection has occurred between the mobile phone and the relaying device, the mobile phone resumes coupling to the address of the relaying device in question and transmits the identifier thereto. The relaying devices respectively search data corresponding to the identifier and transmit a data size as stored therein to the mobile phone. The mobile phone transmits data that the respective relaying devices have not stored to each of them. | 10-23-2008 |
20100017527 | SIP SERVER AND COMMUNICATION SYSTEM - In order to reduce network loads in a large system, provided is a representative aspect of this invention is as follows. That is, there is provided a SIP server coupled to at least one client via a communication line to control a communication session of the at least one client. The SIP server receives a SIP message transmitted from the at least one client, transfers the received SIP message to one of another SIP server and another one of the at least one client, and analyzes the received SIP message. The SIP server comprising a storage unit for storing a result of the analysis. The SIP server compares the result of the analysis and a SIP message received after the analysis, rewrites the SIP message based on a result of the comparison, and changes a transfer destination of the SIP message based on the result of the comparison. | 01-21-2010 |
20100182909 | CONJESTION CONTROL SYSTEM - A congestion control system is provided between a terminal and a server device to avoid a congestion state in the server device by preferentially regulating the request with a high load on the server device. The congestion control system estimates the load of the request from the terminal to be placed on the server device for the next communication sequence, based on the response from the server device to the request from the terminal, and adds the estimated load information to the response to the terminal. Subsequently, the request from the terminal includes the load information, so that the congestion control system controls the regulation of the request from the terminal based on the load information included in the request. | 07-22-2010 |
20100306329 | MAIL RELAY SERVER - To solve the problem with mobile phone carriers that increasing mail traffic increases storage capacity of a mail server and network load, a relay server which relays a mail transfer (SMTP communication) and a mail fetch (IMAP communication) is installed in a carrier facility network. The relay server compresses a mail including a header transferred from a mail transfer server, adds a new header to encapsulate the mail, and transmits the encapsulated mail to an IMAP server as a compressed mail. In response to a mail fetch request from a communication terminal, the relay server decapsulates and restores the compressed mail fetched from the IMAP server, and transmits the restored mail to the communication terminal. The relay server changes parameters such as the mail size, so that no inconsistency of IMAP commands occurs in compressing/restoring the mail. | 12-02-2010 |
20110010588 | TECHNIQUE FOR FAULT AVOIDANCE IN MAIL GATEWAY - In a large-scale mail system such as that of a mobile phone carrier, in case that a mail gateway has encountered a fault due to a fault-inducing mail in arrival thereat, the mail gateway identifies the cause of the fault to prevent the recurrence thereof. The mail gateway is configured to include a mail relaying process used for relaying mails and a monitoring process used for supervising other processes. On occurrence of a fault due to a fault-inducing mail received by the mail relaying process, the monitoring process detects the fault-inducing mail that has cause the fault, the characteristics of the fault-inducing mail and the conditions of the fault, and then records information thus detected into a fault-inducing mail information table. After recovery from the fault under control of the monitoring process, the mail relaying process receives a new arriving mail. Upon receipt of the new arriving mail, the mail relaying process compares the characteristics thereof with relevant information recorded in the fault-inducing mail information table. If a match is found, the mail relaying process performs one of three countermeasures according to the conditions concerned; skipping over a faulty-point processing, returning an error reply to a mail transmission source, or returning a notification of non-delivery thereto. | 01-13-2011 |
20110029621 | MAIL SERVER SYSTEM AND CONGESTION CONTROL METHOD - A mail server system includes a congestion control management section managing a congestion control over the mail server system, a congestion statistical information collection section collecting the congestion statistical information of each mail server, and a resend queue having enough capacity, wherein a retry server for performing a retry process is provided. The congestion control management section detects the mail server where a fault occurs from the collected congestion statistical information and gives an instruction of regulating the sending of a mail directed to the faulty mail server to each mail server. The mail server instructed the regulating the sending of the mail directed to the faulty mail server transfers all the mails directed to that destination to the retry server, and transfers the received mail directed to the faulty mail server to the retry server until there is a regulation dissolution instruction from the congestion control management section. | 02-03-2011 |
20110202616 | DATA STORAGE METHOD AND MAIL RELAY METHOD OF STORAGE SYSTEM IN MAIL SYSTEM - In a mail system, the present invention implements a mail gateway that prevents data from being lost when a server fails and provides high delivery capability. In a mail system, the mail delivery performance of the mail gateway is increased by the communication method and data storage method used between the mail gateway and storage systems. More specifically, the mail gateway and storage system maintain a mail, which should be maintained by the mail gateway, in the volatile memory of the mail gateway and storage system. The mail that may be lost by a failure and important data such as accounting information are written in the nonvolatile memory of the storage system. In addition, the storage system processes multiple accesses to the nonvolatile memory at a time to speedily write data into the nonvolatile memory. | 08-18-2011 |
20120278409 | MAIL SYSTEM - A mail system includes: a data store server that stores a mail transmitted to a user of a terminal device; a mailbox server that controls the storage of the mail. A storage part of the data store server has a first storage part and a second storage part. A control part of the mailbox server determines whether a mail is stored in the first storage part or in the second storage part, based on at least one of a feature of the mail, a feature of the storage part of the data store server, and setting information. | 11-01-2012 |
20130046735 | MAIL SAVING-AND-BACK-UP SYSTEM AND BACKUP METHOD - A mail saving-and-backup system including a mail server and backup servers performs a backup method. The mail server determines the degree of importance of a received email by reference to a mail-importance determination table. Subsequently, the mail server determines the number of one or more backup servers for use in saving the email, according to the degree of importance of the email by reference to a backup-server management table, in which information on the status of each of the backup servers is stored. Then, the mail server selects one or more of the backup servers for use in saving the email. The mail server sends the email to each of the selected one or more of the backup servers. Then, each of the selected one or more of the backup servers stores the email in a memory. | 02-21-2013 |
20130191484 | MAIL TRANSFER SYSTEM, MAIL GATEWAY AND DATA STORE SERVER - It is provided a mail transfer system including a mail gateway, a network and a data storage area. The mail gateway, in a case where destinations of the received electronic mail include a plurality of destinations accommodated in the same mail transfer server, generate a piece of first mail management information including the plurality of destinations, and store mail data linking the generated piece of first mail management information and a body of the electronic mail to each other in the data storage area. The mail gateway, in a case where the destinations of the received electronic mail include one destination accommodated in the same mail transfer server, generate mail management information, which includes the each of the destinations, and store mail data linking each of a plurality of pieces of the generated mail management information and a body of the electronic mail in the data storage area. | 07-25-2013 |
20130246541 | DATA STORING METHOD USED FOR DATA STORE SERVER IN MAILING SYSTEM - A method in which a mail server for receiving mails manages sequence management information that records the sequence of mails stored in a data store server and the times at which a mail server sends the mails to a destination server, wherein the sequence management information is so managed as to satisfy the two conditions: one is to make not greater than a predetermined number the number of entries in any one of respective pieces of the divided sequence management information resulted by dividing the sequence management information into a plurality of pieces, each entry being included in each divided sequence management information piece and defined as a combination of key having the mail body of a certain mail as its value, and the time at which the certain mail is sent to the destination server. | 09-19-2013 |