Method and system for avoiding bypass of carrying media

Abstract

The invention provides a method of avoiding the circularity of a loading media. A communication transmitting end transmits IP domain negotiation request carrying an IP domain message at the transmitting end to a communication receiving end; the communication receiving end transmits the IP domain negotiation request response to the communication transmitting end; if the IP domain negotiation request response which indicates that the IP domain of the communication transmitting end is identical to the IP domain of the communication receiving end, the communication transmitting end negotiates with the communication receiving end to obtain a media connection IP address and / or port information of an opposite terminal. Finally the communication transmitting end can be directly communicated with the communication receiving end through a router; thereby the unnecessary circularity of the loading media is avoided.

Description

technical field [0001] The invention relates to a communication technology, in particular to a technology for avoiding detours of bearing media in the communication process. Background technique [0002] At present, the next generation telecommunication network (NGN, Next Generation Network) provides rich telecommunication services such as voice, video, and multimedia by using IP network technology and a system architecture in which bearer, control, and service layers are separated. Many operators' existing IP networks are IPv4 networks. Due to the shortage of IPv4 addresses, operators use a large number of private network IPv4 addresses in the access network during network planning. Therefore, there are a large number of enterprise network access networks that use private network IP addresses into the phenomenon of NGN. The aforementioned networking schemes and requirements lead to the overlapping of IP address spaces between different networks in the NGN network. Network...

AI Technical Summary

Problems solved by technology

[0028] In NGN networking, when there are multiple network address and / or port translations between different network entities in the same directly routable IP address domain, due to a pair of NAPT translation signaling processing entities and NAPT media translation execution The entity is only responsible for the network address and / or port translation of two adjacent interworking IP domains, and does not know that the two interworking network entities are actually in the same IP directly routable IP address domain, so that through multiple network addresses and / or After the port conversion, the media stream also needs to pass through multiple NAPT media conversion execution entities for media relay, resulting in unnecessary media detours when the media plane can be directly addressed and intercommunicated.

[0029] E.g figure 1 In , assuming that UE1 and UE2 are in the same directly routable IPv4 address domain, UE1 and UE2 can perform direct routing and intercommunication through IP addresses IPv4-1 and IPv4-2 in bearer media intercommunication, but according to the aforementioned IP address and / or the technical solution and process of port conversion, after multiple conversions between IPv4 and IPv6, the media intercommunication between UE1 and UE2 must go through multiple address conversions and media relays by TrGW1 and TrGW2, thus, on the one hand, it increases the number of media Communication delay, on the other hand, media streams that could be directly intercommunicated need to perform unnecessary address translation and traverse the IPv6 core network through TrGW1 and TrGW2, resulting in a great waste of network resources

[0030] Another example is in the application of IMS network networking. When a German T-Mobile user roaming to China Mobile communicates with a local user of China Mobile, the two terminals can directly communicate with each other through It cannot directly communicate with the German T-Mobile network. If the above-mentioned technical solutions and procedures for realizing IP address and / or port translation are used to realize multiple IP address and / or port translations between German T-Mobilc roaming users and China Mobile local users During intercommunication, it will cause unnecessary media detour to T-Mobile's IP bearer network in Germany and multiple address translation processes, resulting in increased communication delay and waste of network resources

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