Abstract: A gateway server 40, in the case that discontinuation of TCP Connection A between a portable phone 10 and gateway server 40 is detected when gateway server 40 is relaying HTTP communication between portable phone 10 and a content server 70, maintains TCP Connection B1 between a billing management server 50 and gateway server 40 until gateway server 40 receives from billing management server 50 billing information for HTTP communication relayed up to the time of the discontinuation of TCP Connection A.

Abstract: A Gateway 3 receives mobile station data corresponding to a mobile station 2 from a switching center in a mobile packet communication network 1. The mobile station data may be communicated with a communication protocol such as Network Management Protocol (NWMP). Mobile station 2 transmits and receives user data, such as Hypertext Transfer Protocol (HTTP) data, in a protocol, such as HTTP, via gateway 3. In transmitting user data from mobile station 2 to a server 5, gateway 3 may add the mobile station data corresponding to mobile station 2 to the data. Mobile station 2 cannot falsify the mobile station data because the added mobile station data corresponds to identification data used in establishing a wireless connection between mobile station 2 and mobile packet communication network 1. As a result, server 5 may trust mobile station data added by gateway 3 to the user data transmitted from mobile station 2.

Abstract: A gateway server 40, in the case that discontinuation of TCP Connection A between a portable phone 10 and gateway server 40 is detected when gateway server 40 is relaying HTTP communication between portable phone 10 and a content server 70, maintains TCP Connection B1 between a billing management server 50 and gateway server 40 until gateway server 40 receives from billing management server 50 billing information for HTTP communication relayed up to the time of the discontinuation of TCP Connection A.

Abstract: A node includes a manager configured to manage the hash value of the node and the hash values of adjacent nodes, and a calculator configured to calculate an insertion position of a new entry node in a ring network, based on the hash value of the new entry node, the hash value of the node and the hash values of the adjacent nodes.

Abstract: A document conversion method for converting a first structured document F1, formed based on a first document type definition D1, to a second structured document F3, formed based on a second document type definition D2, the document conversion method including analyzing the document type definition D1 and document type definition D2 and extracting a difference document type definition, generating a conversion template T2 described therein a conversion rule which prevents the structured document F3, which is the result of document conversion process, from being contradictory to the document type definition D2, based on the results of the analysis, and performing document conversion process using the conversion template T2.

Abstract: There is installed a special management node to efficiently perform network configuration management. When a node starts communication with another node, the node sends a request for node position information about the communication counterpart node to a management node. Upon receiving the node position information request, the management node references a network configuration information table to calculate information about a route from the node to the communication counterpart node. The management node notifies the calculated route information. By utilizing the route information, the node can communicate with the communication counterpart node. Each node notifies node-to-node connection information, information about links with adjacent nodes, to the management node as necessary.

Abstract: A node includes a manager configured to manage the hash value of the node and the hash values of adjacent nodes, and a calculator configured to calculate an insertion position of a new entry node in a ring network, based on the hash value of the new entry node, the hash value of the node and the hash values of the adjacent nodes.

Abstract: It is an object of the invention to measure a communication data volume for each service type in measuring a communication data volume in a charging process and the like. The invention comprises a plurality of measuring points 131 to 133 for measuring a communication data volume and a data relaying apparatus 120 for transmitting received data to any of the plurality of measuring points 131 to 133. The data relaying apparatus 120 has a service-type judging means 121 for judging the service type of the received data, a measuring point determining means 122 for determining the measuring points 131 to 133 to which the data is to be transmitted based on the service type and a data transmission means 122 for transmitting the data to the measuring point thus determined, and each of the plurality of measuring points 131 to 133 has a communication data measuring means for measuring the communication data volume of the data received from the data relaying apparatus 120.

Abstract: A gateway server 40, in the case that discontinuation of TCP Connection A between a portable phone 10 and gateway server 40 is detected when gateway server 40 is relaying HTTP communication between portable phone 10 and a content server 70, maintains TCP Connection B1 between a billing management server 50 and gateway server 40 until gateway server 40 receives from billing management server 50 billing information for HTTP communication relayed up to the time of the discontinuation of TCP Connection A.

Abstract: Gateway 3 receives mobile station data corresponding to mobile station 2 from switching center in mobile packet communication network 1 by NWMP, which is a communication protocol for administration data in mobile packet communication network 1. Mobile station 2 transmits and receives HTTP data in HTTP via gateway 3. In transmitting HTTP data from mobile station 2 to server 5, gateway 3 adds mobile station data corresponding to mobile station 2 as an expansion header of HTTP data. Mobile station 2 does not falsify mobile station data because the added mobile station data is administered in corresponding to identification data used in establishing wireless connection to mobile packet communication network for mobile station 2, and is transmitted and received in NWMP unavailable by mobile station 2. As a result, server 5 may trust mobile station data add to HTTP data transmitted from mobile station 2.

Abstract: A gateway server 140 immediately releases a TCP connection A from a portable phone 110 in a case of receiving, from a base station 120 or a gateway switching station 130, a disconnection notifying signal designating that a wireless link between portable phone 110 and base station 120 or a wired link between base station 120 and gateway server 140 has been disconnected, while relaying HTTP communication between portable phone 110 and content server 160.

Abstract: It is an object of the invention to measure a communication data volume for each service type in measuring a communication data volume in a charging process and the like. The invention comprises a plurality of measuring points 131 to 133 for measuring a communication data volume and a data relaying apparatus 120 for transmitting received data to any of the plurality of measuring points 131 to 133. The data relaying apparatus 120 has a service-type judging means 121 for judging the service type of the received data, a measuring point determining means 122 for determining the measuring points 131 to 133 to which the data is to be transmitted based on the service type and a data transmission means 122 for transmitting the data to the measuring point thus determined, and each of the plurality of measuring points 131 to 133 has a communication data measuring means for measuring the communication data volume of the data received from the data relaying apparatus 120.

Abstract: This invention aims at reducing an total time required for document conversion by outputting an appropriate document data which matches a document type definition after conversion so as to omit a validity verification step in the document structure conversion.