US 2006/0140149 A1 · Method of processing call to unregistered user in WLAN-GPRS network using SIP

Abstract

A method of processing a call to an unregistered user in a Wireless Local Area Network (WLAN)-General Packet Radio Service (GPRS) using a Session Initiation Protocol (SIP) is provided. The method of connecting a call to a mobile node present in a GPRS area includes registering location information of the mobile node to be invited in a Home Subscriber Server (HSS); when the mobile node uses a Mobile Internet Protocol (MIP), allocating an Internet Protocol (IP) address to the mobile node and authenticating the mobile node through MIP registration and setting a SIP session; and when the mobile node uses a simple IP, allocating an IP address to the mobile node and authenticating the mobile node through a Dynamic Host Configuration Protocol (DHCP) procedure and setting a SIP session.

Claims18

Dependent claims

A method of registering and handing off a mobile node, comprising the operations of:

collecting a Media Access Control (MAC) address of a user of the mobile node and transmitting the MAC address from an access point (AP) to an Access Point Manager (APM) when association occurs between the AP and the mobile node;
determining one among initial registration of the mobile node and moving of the mobile node based on the MAC address in the APM;
sending a MAC request message to a Home Subscriber Server (HSS) if the initial registration of the mobile node is determined;
and
updating a database with the MAC address of the mobile node and transmitting registration information to the AP, if the initial registration is determined by the HSS receiving the MAC request message.

2 more elements

A method of connecting a call to a mobile node present in a General Packet Radio Service (GPRS) area using a Session Initiation Protocol (SIP), the method comprising the operation of:

registering location information of the mobile node to be invited in a Home Subscriber Server (HSS);
when the mobile node uses a Mobile Internet Protocol (MIP), allocating an Internet Protocol (IP) address to the mobile node and authenticating the mobile node through MIP registration and setting a SIP session;
and
when the mobile node uses a simple IP, allocating an IP address to the mobile node and authenticating the mobile node through a Dynamic Host Configuration Protocol (DHCP) procedure and setting a SIP session.

1 more element

A method of connecting a call to a mobile node present in a Wireless Local Area Network (WLAN) area using a Session Initiation Protocol (SIP), the method comprising the operation of:

registering location information of the mobile node to be invited in a Home Subscriber Server (HSS);
when the mobile node uses a Mobile Internet Protocol (MIP), allocating an Internet Protocol (IP) address to the mobile node and authenticating the mobile node through MIP registration;
and
when the mobile node uses a simple IP, allocating an IP address to the mobile node and authenticating the mobile node through a Dynamic Host Configuration Protocol (DHCP) procedure.

1 more element

Dependencies are inferred from the claim text.

Method of processing call to unregistered user in WLAN-GPRS network using SIP

Life of this patent

Method of processing call to unregistered user in WLAN-GPRS network using SIP

Life of this patent

Abstract

Claims18