Methods and apparatuses for cdma2000/gprs roaming

Abstract

IIF architectures and corresponding call flows are provided for CDMA2000/GPRS roaming scenarios such as GPRS foreign mode with Mobile IPv4, GPRS foreign mode with Simple IPv4 or IPv6, CDMA2000 packet data foreign mode with Mobile IPv4, and CDMA2000 packet data foreign mode with Simple IPv4 or IPv6.

What is claimed is: 
     
         1 . A method for enabling communication between a home code division multiple access (CDMA) packet data system and a visited general packet radio service (GPRS) system when a subscriber using mobile internet protocol (IP) roams from the home CDMA packet data system to the visited GPRS system, the method comprising:
 registering the subscriber with the visited GPRS system over a first interface coupling a GSM home location register emulation module to a serving GPRS support node (SGSN) within the visited GPRS system; and   registering the subscriber with the home CDMA packet data system over a second interface coupling an ANSI-41 visited location register emulation module to a ANSI-41 home location register within the home CDMA packet data system.   
     
     
         2 . The method of  claim 1 , further comprising:
 establishing bearer connectivity between the home CDMA packet data system and the visited GPRS system through:
 a gateway GPRS support node (GGSN) emulation module coupled to the SGSN within the visited GPRS system; and 
 a foreign agent (FA) emulation module coupled to a home agent (HA) within the home CDMA packet data system. 
   
     
     
         3 . The method of  claim 2 , further comprising:
 a packet routing function between the GGSN emulation module and the FA emulation module.   
     
     
         4 . The method of  claim 1 , further comprising:
 mobile IP FA challenge authentication over a third interface coupling an authentication, authorization, and accounting (AAA) emulation module to a AAA entity within the home CDMA packet data system.   
     
     
         5 . The method of  claim 4 , further comprising:
 packet data accounting over the third interface.   
     
     
         6 . An interface entity for enabling communication between a home code division multiple access (CDMA) packet data system and a visited general packet radio service (GPRS) system when a subscriber using mobile internet protocol (IP) roams from the home CDMA packet data system to the visited GPRS system, the interface entity comprising:
 a GSM home location register emulation module allowing the subscriber to register over a first interface coupling the GSM home location register emulation module to a serving GPRS support node (SGSN) within the visited GPRS system; and   an ANSI-41 visited location register emulation module allowing the subscriber to register over a second interface coupling the ANSI-41 visited location register emulation module to an ANSI-41 home location register within the home CDMA packet data system.   
     
     
         7 . The interface entity of  claim 6 , further comprising:
 a gateway GPRS support node (GGSN) emulation module coupled to the SGSN within the visited GPRS system;   a foreign agent (FA) emulation module coupled to a home agent (HA) within the home CDMA packet data system, wherein the GGSN emulation module and the FA emulation module support bearer connectivity between the home CDMA packet data system and the visited GPRS system.   
     
     
         8 . The interface entity of  claim 7 , further comprising:
 a packet routing function between the GGSN emulation module and the FA emulation module.   
     
     
         9 . The interface entity of  claim 7 , further comprising:
 an authentication, authorization, and accounting (AAA) emulation module coupled to a AAA entity within the home CDMA packet data system over a third interface for mobile IP FA challenge authentication.   
     
     
         10 . The interface entity of  claim 9 , wherein the AAA emulation module coupled to the AAA entity within the home CDMA packet data system over the third interface provides packet data accounting. 
     
     
         11 . A method for enabling communication between a home general packet radio service (GPRS) system and a visited code division multiple access (CDMA) packet data system when a subscriber using mobile internet protocol (IP) roams from the home GPRS system to the visited CDMA packet data system, the method comprising:
 providing a home agent (HA) interface to the visited CDMA packet data system by coupling a HA emulation module to a packet data serving node/foreign agent (PDSN/FA) within the visited CDMA packet data system; and   providing a serving GPRS support node (SGSN) interface to the home GPRS system by coupling a SGSN emulation module to a gateway GPRS support node (GGSN) within the home GPRS system, wherein a packet routing function is provided between the SGSN emulation module and the HA emulation module.   
     
     
         12 . The method of  claim 11 , further comprising:
 establishing bearer connectivity between the home GPRS system and the visited CDMA packet data system through:
 the HA interface; and 
 the SGSN interface. 
   
     
     
         13 . The method of  claim 12 , further comprising:
 mobile IP authentication over a third interface coupling an authentication, authorization, and accounting (AAA) emulation module to a AAA entity within the visited CDMA packet data system.   
     
     
         14 . The method of  claim 13 , further comprising:
 packet data accounting over the third interface.   
     
     
         15 . The method of  claim 13 , further comprising:
 packet data accounting over a fourth interface coupling the AAA emulation module to a AAA entity within the home GPRS system.   
     
     
         16 . An interface entity for enabling communication between a home general packet radio service (GPRS) system and a visited code division multiple access (CDMA) packet data system when a subscriber using mobile internet protocol (IP) roams from the home GPRS system to the visited CDMA packet data system, the interface entity comprising:
 a home agent (HA) emulation module providing a home agent interface to a packet data serving node/foreign agent (PDSN/FA) within the visited CDMA packet data system;   a SGSN emulation module providing a SGSN interface to a gateway GPRS support node (GGSN) within the home GPRS system, wherein a packet routing function is provided between the SGSN emulation module and the HA emulation module.   
     
     
         17 . The interface entity of  claim 16 , further comprising:
 a GSM visited location register emulation module allowing the subscriber to register over a first interface coupling the GSM visited location register emulation module to a GSM home location register within the home GPRS system; and   an ANSI-41 home location register emulation module allowing the subscriber to register over a second interface coupling the ANSI-41 home location register emulation module to an ANSI-41 visited location register within the visited CDMA packet data system.   
     
     
         18 . The interface entity of  claim 16 , further comprising:
 an authentication, authorization, and accounting (AAA) emulation module coupled to a AAA entity within the visited CDMA packet data system over a third interface for mobile IP authentication.   
     
     
         19 . The interface entity of  claim 18 , wherein the AAA emulation module coupled to the AAA entity within the visited CDMA packet data system over the third interface provides packet data accounting. 
     
     
         20 . The interface entity of  claim 18 , further comprising:
 the AAA emulation module coupled to a AAA entity within the home GPRS system over a fourth interface for packet data accounting.   
     
     
         21 . A method for enabling communication between a home general packet radio service (GPRS) system and a visited code division multiple access (CDMA) packet data system when a subscriber using simple internet protocol (IP) roams from the home GPRS system to the visited CDMA packet data system, the method comprising:
 providing a layer 2 tunneling protocol network server (LNS) interface to the visited CDMA packet data system by coupling a LNS emulation module to a packet data serving node/layer 2 tunneling protocol Access Concentrator (PDSN/LAC) within the visited CDMA packet data system; and   providing a serving GPRS support node (SGSN) interface to the home GPRS system by coupling a SGSN emulation module to a gateway GPRS support node (GGSN) within the home GPRS system, wherein a packet routing function is provided between the SGSN emulation module and the home agent emulation module.   
     
     
         22 . The method of  claim 21 , further comprising:
 establishing bearer connectivity between the home GPRS system and the visited CDMA packet data system through:
 the LNS interface; and 
 the SGSN interface. 
   
     
     
         23 . The method of  claim 21 , further comprising:
 layer 2 tunneling protocol (L2TP) authentication over a third interface coupling an authentication, authorization, and accounting (AAA) emulation module to a AAA entity within the visited CDMA packet data system.   
     
     
         24 . The method of  claim 23 , further comprising:
 packet data accounting over the third interface.   
     
     
         25 . The method of  claim 23 , further comprising:
 packet data accounting over a fourth interface coupling the AAA emulation module to a AAA entity within the home GPRS system.   
     
     
         26 . An interface entity for enabling communication between a home general packet radio service (GPRS) system and a visited code division multiple access (CDMA) packet data system when a subscriber using simple internet protocol (IP) roams from the home GPRS system to the visited CDMA packet data system, the interface entity comprising:
 a L2TP network server (LNS) emulation module providing a LNS interface to a packet data serving node/layer 2 tunneling protocol Access Concentrator (PDSN/LAC) within the visited CDMA packet data system;   a SGSN emulation module providing a SGSN interface to a gateway GPRS support node (GGSN) within the home GPRS system, wherein a packet routing function is provided between the SGSN emulation module and the home agent emulation module.   
     
     
         27 . The interface entity of  claim 26 , further comprising:
 a GSM visited location register emulation module allowing the subscriber to register over a first interface coupling the GSM visited location register emulation module to a GSM home location register within the home GPRS system; and   an ANSI-41 home location register emulation module allowing the subscriber to register over a second interface coupling the ANSI-41 home location register emulation module to an ANSI-41 visited location register within the visited CDMA packet data system.   
     
     
         28 . The interface entity of  claim 27 , further comprising:
 an authentication, authorization, and accounting (AAA) emulation module coupled to a AAA entity within the visited CDMA packet data system over a third interface for L2TP authentication.   
     
     
         29 . The interface entity of  claim 28 , wherein the AAA emulation module is coupled to the AAA entity within the visited CDMA packet data system for packet data accounting. 
     
     
         30 . The interface entity of  claim 28 , further comprising:
 the AAA emulation module coupled to a AAA entity within the home GPRS system over a fourth interface for packet data accounting.   
     
     
         31 . A method for enabling communication between a home code division multiple access (CDMA) packet data system and a visited general packet radio service (GPRS) system when a subscriber using simple internet protocol (IP) roams from the home CDMA packet data system to the visited GPRS system, the method comprising:
 coupling the home CDMA packet data system to the visited GPRS system by providing a distinct interface for each of an ANSI-41 home location register, an authentication, authorization, and accounting (AAA) entity, and a layer 2 tunneling protocol network server (LNS) within the home CDMA packet data system.   
     
     
         32 . The method of  claim 31 , wherein the coupling the home CDMA packet data system to the visited GPRS system further includes providing a distinct interface for a Serving GPRS Service Node (SGSN) within the visited GPRS system. 
     
     
         33 . The method of  claim 32 , further comprising:
 registering the subscriber with the visited GPRS system over the distinct interface for the SGSN within the visited GPRS system; and   registering the subscriber with the home CDMA packet data system over the distinct interface for the ANSI-41 home location register within the home CDMA packet data system.   
     
     
         34 . The method of  claim 32 , further comprising:
 establishing bearer connectivity between the home GPRS system and the visited CDMA packet data system through:
 the distinct interface for the SGSN; and 
 the distinct interface for the ANSI-41 home location register. 
   
     
     
         35 . The method of  claim 31 , further comprising:
 layer 2 tunneling protocol (L2TP) authentication and packet data accounting over the distinct interface for the AAA entity.   
     
     
         36 . A method for enabling communication between a home code division multiple access (CDMA) packet data system and a visited general packet radio service (GPRS) system when a subscriber using simple internet protocol (IP) roams from the home CDMA packet data system to the visited GPRS system, the method comprising:
 registering the subscriber with the visited GPRS system over a first interface coupling a GSM home location register to a serving GPRS support node (SGSN) within the visited GPRS system; and   registering the subscriber with the home CDMA packet data system over a second interface coupling an ANSI-41 visited location register to a ANSI-41 home location register within the home CDMA packet data system.   
     
     
         37 . The method of  claim 36 , further comprising:
 establishing bearer connectivity between the home CDMA packet data system and the visited GPRS system through:
 a gateway GPRS support node (GGSN) emulation module coupled to the SGSN within the visited GPRS system; and 
 a layer 2 tunneling protocol Access Concentrator (LAC) emulation module coupled to a layer 2 tunneling protocol network server (LNS) within the home CDMA packet data system. 
   
     
     
         38 . The method of  claim 37 , further comprising:
 a packet routing function between the GGSN emulation module and the LAC emulation module.   
     
     
         39 . The method of  claim 36 , further comprising:
 layer 2 tunneling protocol (L2TP) authentication over a third interface coupling an authentication, authorization, and accounting (AAA) emulation module to a AAA entity within the home CDMA packet data system.   
     
     
         40 . The method of  claim 39 , further comprising:
 packet data accounting over the third interface.   
     
     
         41 . An interface entity for enabling communication between a home code division multiple access (CDMA) packet data system and a visited general packet radio service (GPRS) system when a subscriber using simple internet protocol (IP) roams from the home CDMA packet data system to the visited GPRS system, the interface entity comprising:
 a GSM home location register allowing the subscriber to register over a first interface coupling the GSM home location register to a serving GPRS support node (SGSN) within the visited GPRS system; and   an ANSI-41 visited location register allowing the subscriber to register over a second interface coupling the ANSI-41 visited location register to an ANSI-41 home location register within the home CDMA packet data system.   
     
     
         42 . The interface entity of  claim 41 , further comprising:
 a gateway GPRS support node (GGSN) emulation module coupled to the SGSN within the visited GPRS system;   a layer 2 tunneling protocol Access Concentrator (LAC) emulation module coupled to a L2TP network server (LNS) within the home CDMA packet data system, wherein the GGSN emulation module and the FA emulation module support bearer connectivity between the home CDMA packet data system and the visited GPRS system.   
     
     
         43 . The interface entity of  claim 42 , further comprising:
 a packet routing function between the GGSN emulation module and the LAC emulation module.   
     
     
         44 . The interface entity of  claim 42 , further comprising:
 an authentication, authorization, and accounting (AAA) emulation module coupled to a AAA entity within the home CDMA packet data system for L2TP authentication.   
     
     
         45 . The interface entity of  claim 44 , wherein the AAA emulation module coupled to the AAA entity within the home CDMA packet data system provides packet data accounting.