Mobile Internet data transmission method and system

Abstract

The invention discloses a mobile Internet data transmission method and system. The method comprises the following steps: receiving a data transmission request from a mobile terminal transmitted by a first access gateway by using a dispatch server; selecting a first mirror server nearest to a topological distance terminal address as a data transmission server according to the address information of the mobile terminal; allocating a virtual address vIP (virtual Internet Protocol) to a current session, and transmitting a first mirror server address, a first network address conversion equipment address associated with the first mirror server address, the virtual address vIP and mobile terminal address information to an anchor node; and requesting data transmission based on the virtual address vIP by using the mobile terminal. The mobile terminal only needs to perform corresponding data packet request based on the vIP without initiating any data request to the address of a real mirror server, and the dispatch server always selects a nearest mirror server to provide service, so that the network overhead is reduced, and the data transmission efficiency is increased.

Description

technical field [0001] The invention relates to a mobile Internet data transmission method and system, belonging to the technical field of multimedia communication. Background technique [0002] The traditional IP packet routing and quality of service control technology only analyzes the five-tuple information in the IP packet header to determine the basic information of the flow. The five-tuple information includes: source address, destination address, source port, destination port and protocol type . Traditional IP routers only achieve a certain degree of routing and service quality assurance through the information obtained by quintuples. However, with the popularization of mobile devices and the application of mobile networks, the movement of mobile devices between different access points will break the original There are rules for fixed-line session quintuples. Mobile IP supports the use of mobile terminals when they move, and uses the home agent, foreign agent, and a...

AI Technical Summary

Problems solved by technology

This form relies on a single mobile anchor node to support the mobility of terminal devices, and generally has the following problems: 1. Non-optimal routing, especially when the server in the content distribution network is pushed to the edge of the network

This results in high latency between mobile users and content servers, and unnecessary load in the core network

2. The scalability is not good, the number of anchor nodes increases with the increase of the number of mobile users

[0018] However, for CDN servers, user mobility cannot be easily perceived under the PMIP-DMM system

It cannot be achieved unless the user sends a message to the CDN server to report the current location or re-initiates a data request for the same content when moving to a new MAG range

However, in the PMIP-DMM system, users themselves do not perceive their own mobility, and repeatedly initiating requests imposes requirements on the software level of the terminal, which is not realistic in implementation

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