Establishing an IP session between a host using SIP and a device without an IP address

• US 20030217174A1
• Filed: 05/15/2002
• Published: 11/20/2003
• Est. Priority Date: 05/15/2002
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Dorenbosch, Jheroen P., Miriyala, Srinivas
• Granted Patent: US 8,255,501 B2
• Time in Patent Office: Days
• US Class Current: 709/237
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

An apparatus and method for establishing an IP session between a host 105 using a session initiation protocol and a device or mobile station 103 without an IP address is described. The apparatus includes a network interface 405 for receiving, via an IP connection, a session request that includes a host contact corresponding to the host and a device identifier corresponding to the device; a controller 407 for parsing the session request to determine the device identifier; preparing a message for the device that includes the device identifier and the session request, and presenting the message to the network interface, the message to be delivered to the device via a non-IP connection and to result in the device obtaining a device IP address and sending an acknowledgment of the SIP session request that includes the device IP address.

Claims

1. A method of initiating an Internet Protocol (IP) session between a host using a session initiation protocol and a device without an IP address, the method including the steps of:

receiving, via an IP connection, a session request that includes a host contact that corresponds to the host and a device identifier that corresponds to the device;

parsing the session request to determine said device identifier;

preparing a message for the device that includes said session request; and

forwarding said message to the device via a non-IP connection, said message resulting in the device obtaining a device IP address and sending an acknowledgment of the session request that includes said device IP address.

2. The method of claim 1 wherein said forwarding said message to the device utilizes a short messaging service message.

3. The method of claim 2 wherein said message includes said session request encapsulated in an over the air wireless session protocol packet data unit.

4. The method of claim 1 wherein said device is a packet data enabled mobile station

5. The method of claim 4 wherein said obtaining said device IP address is the result of activating a Packet Data Protocol context.

6. The method of claim 1 wherein said session request is a SIP:

INVITE message, said device IP address is an IPv4 address and said acknowledgment is a SIP;

OK message.

7. A method of setting up an Internet Protocol (IP) session between a host using a Session Initiation Protocol (SIP) and a device without an IP address, the method including the steps of:

first receiving, via an IP connection, a SIP INVITE message that includes a device identifier corresponding to the device;

parsing the SIP INVITE message to obtain said device identifier and preparing a message for the device that includes said device identifier and encapsulates said SIP INVITE message;

delivering said message to the device over a non-IP connection;

establishing, responsive to said step of delivering, a PDP context including a device IP address for the device;

receiving an acknowledgment of said SIP INVITE message from the device, said acknowledgment including said device IP address; and

forwarding said acknowledgment to the host.

8. The method of claim 7 wherein said step of delivering said message includes delivering said message to the device via a short messaging service message.

9. The method of claim 8 wherein said message includes said SIP INVITE message encapsulated in an over the air wireless session protocol packet data unit.

10. The method of claim 7 wherein said device is a packet data enabled mobile station.

11. The method of claim 7 wherein said obtaining said device IP address is the result of activating a Packet Data Protocol context.

12. The method of claim 7 wherein said device IP address is an IPv4 address and said acknowledgment is a SIP:

OK message.

13. The method of claim 7 wherein said step of forwarding said acknowledgment uses the non-IP connection.

14. The method of claim 7 wherein said step of forwarding said acknowledgment uses an IP connection between the device and the host.

15. An apparatus for enabling the establishment of an Internet Protocol (IP) session between a host using a session initiation protocol and a device without an IP address, the apparatus comprising in combination:

a network interface for receiving, via an IP connection, a session request that includes a host contact corresponding to the host and a device identifier corresponding to the device;

a controller, coupled to said network interface, for

parsing the session request to determine said device identifier;

preparing a message for the device that includes said device identifier and said session request, and

presenting said message to said network interface, said message to be delivered to the device via a non-IP connection and to result in the device obtaining a device IP address and sending an acknowledgment of the SIP session request that includes said device IP address.

16. The apparatus of claim 15 wherein said message is to be delivered to the device via a short messaging service center in the form of short messaging service message.

17. The apparatus of claim 16 wherein said message includes said session request encapsulated in an over the air wireless session protocol packet data unit.

18. The apparatus of claim 15 wherein said device is a packet data enabled mobile station.

19. The apparatus of claim 15 wherein said obtaining said device IP address is the result of activating a Packet Data Protocol context.

20. The apparatus of claim 15 wherein said session request is a SIP:

INVITE message, said device IP address is an IPv4 address, and said acknowledgment is a SIP;

OK message.

21. The apparatus of claim 20 wherein said network interface receives said SIP:

INVITE message addressed to a user name corresponding to said device identifier and said controller prepares said message as an over the air wireless services protocol packet data unit that encapsulates said SIP;

INVITE message as the payload and presents, via said network interface, said message to a short message services center for delivery to the device as a short messaging services message.

22. The apparatus of claim 20 wherein said SIP:

INVITE message is received by the apparatus as a result of a SIP registrar including a SIP Contact corresponding to the device, said SIP Contact including a host name corresponding to the apparatus.