Method for distribution of IP address in wideband wireless city area network

Abstract

This invention relates to a distribution method for a base station IP address, in which, the DHCP server of a core network is divided into a hierarchical structure based on the geographical positions, each DHCP server in a MAN can manage several radio base stations, which are taken as the broker for assigning and releasing IP addresses between the mobile station and DHCP server, at the beginning of the core net, a lower level DHSP server can require to the upper level server based on the positions of its managed base stations to get the corresponding IP address action region dynamically, at the beginning of logging-on to the net, the mobile station asks for assigning IP addresses to the base station, which negotiates with a DHCP server of the MAN sub-net to assign the IP addresses and confirms them not conflict and returns back the new IP addresses to the mobile station.

Description

technical field [0001] The invention belongs to the technical field of broadband wireless metropolitan area network, in particular to a method for allocating IP addresses in the broadband wireless metropolitan area network. Background technique [0002] Broadband wireless metropolitan area network (IEEE 802.16Wireless MAN) is a broadband network that can provide high-speed wireless access within the metropolitan area. The IEEE 802.16 standard defines the air interface specification for broadband wireless access. Reference [1] Carl Eklund, Roger B. Marks, "IEEE Standard 802.16: A Technical Overview of the WirelessMAN TM Air Interface for Broadband Wireless Access", IEEE C802.16-02 / 05, 2002. [0003] Dynamic Host Configuration Protocol (DHCP) is a network protocol that automatically assigns and reuses network addresses and other configuration information. Reference [2] R. Droms, "RFC 2131 - Dynamic Host Configuration Protocol", IETF, March 1997. DHCPv6 (Dynamic Host Confi...

AI Technical Summary

Problems solved by technology

[0004] In the wireless metropolitan area network, after the initial ranging, basic capability negotiation, registration and other processes, the mobile station needs to request an IP address from the base station. However, the 802.16 standard does not define the IP address allocation method, and the mobile station in the wireless metropolitan area network The station connects to the base station through the air interface, and the base station connects to the DHCP server, which determines that its IP allocation strategy is different from the situation in which the client directly requests the DHCP server to allocate an IP address in a wired connection environment. Therefore, it is necessary to provide a A Method for Allocating IP Addresses in Broadband Wireless Metropolitan Area Network

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