Network architecture cooperated by various wireless networks and method

Abstract

The invention relates to a network architecture cooperated by various wireless networks, which comprises a metropolitan area wireless access network, a local area wireless access network, an MNC (Multipoint Network Control System) and a wireless core network, wherein a service area comprises a metropolitan area network cell and all local area network cells covered under the metropolitan area network cell; the metropolitan area and the local area wireless access networks are connected with the wireless core network through the MNC and used for initially accessing or accessing a terminal in a switched mode to the wireless core network through the MNC; the MNC is used for being responsible for the interaction of the metropolitan area and the local area wireless access networks and the wireless core network in the service area; the terminal obtains an IP (Internet Protocol) address through the metropolitan area or local area wireless access network and is used for checking whether the corresponding IP address is saved or not according to the MAC (Media Access Control) address of the terminal; the IP address is taken as the IP address of the terminal if the corresponding IP address is saved; and the information corresponding to the distribution of the IP address is transmitted and the correspondence relation of the MAC address of the terminal and the distributed IP address is stored if the corresponding IP address is not saved. The t the network architecture and the method can guarantee the continuity of top businesses when the networks are switched.

Description

technical field [0001] The invention relates to a broadband wireless access technology, in particular to a multi-wireless network coordinated network architecture and method. Background technique [0002] With the rapid development of wireless communication, wireless communication has gradually become an indispensable tool in people's daily work and life. Wireless communication brings convenience to users and great benefits to service providers and operators. [0003] Users can use a variety of broadband wireless access systems, such as WLAN with small coverage such as WiFi (Wireless Fidelity, wireless fidelity) or WAPI (WLAN Authentication and Privacy Infrastructure, that is, wireless local area network authentication and privacy infrastructure). Wide range coverage includes Wimax (Worldwide Interoperability for Microwave Access, Global Microwave Interconnection Access), UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System), GPRS (Genera...

AI Technical Summary

Problems solved by technology

The disadvantage of WLAN is that the coverage is small. Under the assumption of Line of sight (LoS), the theoretical outdoor range that WLAN can cover is only about 20 kilometers, and the actual usable range is only about 1 to 2 kilometers, that is, 500 to 1000 meters in each direction

[0008] There are two main aspects of the existing WLAN and Wimax integration technology. One aspect is how to receive and transmit signals at the physical layer in a time-division manner, which does not involve the processing of upper-layer services. If only the switching between the two networks is performed on the physical layer, The continuity of the upper-layer business cannot be guaranteed; another aspect is to discuss how to switch between the two networks through Mobile IP. The deployment of Mobile IP is complicated, and it takes a certain amount of time to allocate IP addresses and register with Mobile IP, so the service will be short-lived (several seconds) ) interrupt, some data may be lost

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