IPv6/IPv4 translator
a translator and translator technology, applied in the field of ipv6/ipv4, can solve the problems of inability to communicate with existing terminals, terminals supporting only ipv6 cannot support each other, and it is difficult to accommodate all users with the present ipv4-based services,
Inactive Publication Date: 2005-08-25
YOKOGAWA ELECTRIC CORP
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Benefits of technology
The technology allows devices on networks (called clients) can communicate directly over an internet connection without going through any intermediate servers like HTTP proxy). This makes session establishment faster than traditional methods where users manually input their own address before they start transmitting data across multiple connections.
Problems solved by technology
Technics Problem addressed in this patents include how Terminal Equipment (TE) devices can communicate with another device called Network Address Message Access Point (NAP2) or Intermediate System Controller (ISC1) based upon their unique identifier like Unique ID Number (UID)). Additionally, there may be scenarios where two TE's have identicated addresses but they donate resources during certain periods. These issues require efficient methods for managing resource allocation and routing within wireless systems.
Method used
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[0100] The present invention is explained in further detail referring to the drawings.
[0101]FIG. 12 is a configuration diagram wherein an IPv6 / IPv4 translator is connected between SIP Proxy (Proxy1) and SIP Proxy (Proxy2). FIG. 13 is a configuration diagram wherein an IPv6 / IPv4 translator is connected between UA1 and SIP Proxy (Proxy1), FIG. 14 is a configuration diagram wherein an IPv6 / IPv4 translator is connected between SIP Proxy (Proxy2) and UA2, and FIG. 15 is a configuration diagram wherein SIP Proxy is not used. Here, FIG. 12 is the most fundamental configuration and includes the variations shown in FIG. 13 and FIG. 14.
[0102] The IPv6 / IPv4 translator for use in FIG. 12 to 15 is provided with an IP translation part for address translations between IPv6 and IPv4, an SIP translation part for translating addresses described in SIP messages into IPv6 addresses or IPv4 addresses, an SDP translation part for translating addresses described in SDP messages into IPv6 addresses
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An object of the present invention is to realize packet communication between an IPv6 terminal connected to an IPv6 network and an IPv4 terminal connected to an IPv4 network. Another object of the present invention is to realize RTP communication for establishing sessions in accordance with SIP between an IPv6 terminal connected to an IPv6 network and an IPv4 terminal connected to an IPv4 network. For these objects, the present invention provides an IPv6/IPv4 translator for translating packets between IPv6 and IPv4 with means of translating addresses described in SIP messages into IPv6 addresses or IPv4 addresses. Moreover, the present invention provides the aforementioned IPv6/IPv4 translator with means of translating addresses described in SDP messages into IPv6 addresses or IPv4 addresses. These SDP messages shall be related to media data transmissions. Furthermore, the IPv6/IPv4 translator can be directly connected to a terminal connected to an IPv6 network and to a terminal connected to an IPv4 network, or can be connected via SIP proxy to an SIP terminal connected to an IPv6 network and to an SIP terminal connected to an IPv4 network. According to the present invention, the IPv6/IPv4 translator translates addresses described in SIP messages into IPv6 addresses or IPv4 addresses when translating packets from IPv6 to IPv4 or from IPv4 to IPv6. Therefore, it will be possible to perform communication from a terminal supporting IPv6 only to a terminal supporting IPv4 only. Also, it will be possible to perform communication from a terminal supporting IPv4 only to a terminal supporting IPv6 only. In addition, the IPv6/IPv4 translator translates addresses described in SDP messages into IPv6 addresses or IPv4 addresses when translating packets from IPv6 to IPv4 or from IPv4 to IPv6. Therefore, it will be possible to perform RTP communication for establishing sessions in accordance with SIP from IPv6 to IPv4 or conversely from IPv4 to IPv6, which is suitable for media data transmissions such as IP phone services.
Description
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