IP (internet protocol) address allocation method, system and device

Abstract

The invention discloses an IP (internet protocol) address allocation method, which comprises the steps as follows: a private network IP address is allocated to a terminal accessing to a wireless local area network; when a service is launched by the terminal, if the launched service belongs to a first service, then the terminal uses the allocated private network IP address to access the launched service, and conversion between the private network IP and an external public network IP address is realized through a network address converter; if the launched service belongs to a second service, then authentication is implemented on the terminal; moreover, when the authentication is passed, a public network IP address is allocated to the terminal, and is informed to a gateway device; and the terminal uses the allocated public network IP address to access the launched service through the gateway device. The invention simultaneously discloses a terminal, a network system, a gateway device anda server. The method, system and the device can be used for not only guaranteeing the normal running of the service, but also can be used for better saving the public network IP address resource.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to an Internet Protocol (IP, Internet Protocol) address allocation method, system and equipment. Background technique [0002] Wireless Local Area Network (WLAN, Wireless Local Area Network) is a broadband wireless access technology using a wireless channel as a transmission medium, which can realize high-speed data access from a terminal to a local area network in a wireless manner. [0003] figure 1 It is a schematic diagram of an architecture of an existing WLAN network. Such as figure 1 As shown, the access point (AP, Access Point) is a terminal access device, which supports the relevant technical standards of the Institute of Electrical and Electronics Engineers (IEEE, Institute of Electrical and Electronics Engineers) 802.11, and the access control point (AC, Access Control) As an access control device, only the data flow of authorized terminals is allowed to pas...

AI Technical Summary

Problems solved by technology

Although this method can solve the problem of waste of public network IP address resources to a certain extent, it also brings new problems: since the gateway device stores the private network IP address of the terminal, and the terminal accesses the PS domain business The IP address of the public network is used, that is to say, the IP address of the terminal stored in the gateway device is inconsistent with the IP address used by the terminal for business access, so the gateway device will not be able to determine which terminal is in the For business visits, resulting in the failure of subsequent billing and other work

Although this method will not cause the problem that the IP address of the terminal stored in the gateway device is inconsistent with the IP address used by the terminal for service access, Internet services are currently used more services. If public network IP addresses are used for Internet service access will still occupy a large amount of public network IP address resources, causing tension in public network IP address resources

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