Method for initiating lease period renewal process of protocol address network

Abstract

The invention relates to a method for initializing IP address lease refresh, and a relative device, wherein ASN GW of SS / MS stores a lease period of IP address distributed for SS / MS, A, ASN GW according to the stored lease period judges if the time initializing DHCP Renewal of SS / MS is arrived, if reaches, executing step B, or else, entering to step A, to judge again, B, ASN GW sends a lease period refresh message with IP address of SS / MS to a DHCP Server, the DHCP Server prolongs the lease period for the SS / MS with the IP address carried in the lease period refresh message, to send the leaseprolonged period via the confirm message of the message to ASN GW. The inventive method can avoid SS / MS to initialize DHCP Renewal, and even when MS enters into IdIe mode, the invention can avoid receding IdIe mode and enter into Active mode to initialize DHCP Renewal, thereby saving the IdIe resource between SS / MS and BS.

Description

technical field [0001] The invention relates to a technique for allocating Internet Protocol (IP) addresses in a worldwide interoperability for microwave access (WiMAX) system, and in particular to a method for initiating an IP address lease period renewal process. Background technique [0002] The working group (NWG) that formulates WiMAX network specifications is responsible for formulating end-to-end network specifications. The functional entity and network interface in the network lay the foundation for the interworking authentication of the WiMAX system. [0003] NWG Phase 1 is the requirement phase and has been completed in the second quarter of 2005; NWG Phase 2 describes the WiMAX system network architecture and is planned to be completed in the second quarter of 2006. figure 1 Schematic diagram of the WiMAX system network architecture proposed for NWG Phase 2, including Subscriber Station (SS) / Mobile Station (MS), Access Service Network (ASN), Internet Service Ne...

AI Technical Summary

Problems solved by technology

[0020] There are disadvantages in the DHCP Renewal process of the IP address lease period assigned for SS / MS lease renewal: Disadvantage 1, when SS / MS enters Idle mode , when the assigned IP address lease period is about to expire, the SS / MS must exit the Idle mode, and re-enter the Active mode to initiate the DHCPRenewal process

In this way, every time the SS / MS initiates the DHCP Renewal process, it needs to exit the Idle mode, enter the Active mode and establish a service channel, which wastes the air interface resources with the BS; the second disadvantage is that the SS / MS needs to send the DHCP Renewal message For the DHCP Server, when the DHCP Server fails, the SS / MS will frequently send DHCP Renewal messages, wasting air interface resources

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