TRANSPARENT SESSION INITIATED PROTOCOL

• US 20090207828A1
• Filed: 04/30/2009
• Published: 08/20/2009
• Est. Priority Date: 06/22/2004
• Status: Abandoned Application

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Thommana, John, Pragada, Ravikumar
• Application Number:
  US12/433,318
• Publication Number:
  US 20090207828A1
• Time in Patent Office: Days
• US Class Current: 370/338
• 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: H04W 76/11 Allocation or use of connection identifiers
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 80/10 adapted for application session management, e.g. SIP [Session Initiation Protocol] connection management H04W76/00; arrangements for session management H04L67/14

Abstract

Method and apparatus employing a transparent session initiation protocol (SIP) technique for communication especially between a user device in one domain and an application/service provided in an external domain. The transparent SIP technique is usable in wired or wireless systems such as 3G systems and wireless local area networks (WLANs).

Claims

1. A method employed by a user device (UE) having a proxy agent and being capable of support by a third generation (3G) system, said method enabling the UE in one domain to communication with a third party application/content server in a domain external to the user device, the method comprising:

the user device;

generating an Invite communication;

the proxy agent;

invoking a general packet radio service (GPRS) attach responsive to said Invite communication;

establishing a packet data protocol (PDP) context bearer employing a PDP context establishment procedure;

performing a directory name service (DNS) lookup and identifying the IP address, port and transport protocol for a Proxy 2 in the external domain;

establishing a packet switch (PS) call to a proxy server (Proxy 2) in said external domain; and

transmitting an Invite communication to said Proxy 2 to initiate a media session directly between said UE and said third party application/content server (AS).

2. The method of claim 1 wherein the Proxy 2:

provides an invite communication to the AS; and

said AS;

initiates a session with the UE.

3. A user device (UE) configured for operation in a first wireless domain having a capability to directly communicate with an application/content server (AS) in a second wireless domain outside of said first domain, the UE comprising:

a mobile platform configured to support 3GPP, said mobile platform being further configured to;

identify an Invite communication as intended for an external domain responsive to an Invite communication initiated by the UE;

invoke a general packet radio service (GPRS) attach;

perform a packet data protocol (PDP) context establishment procedure;

perform a directory name service (DNS) lookup and identify an IP address, port and transport protocol for a Proxy 2 in the second domain; and

establish a packet switched (PS) call to said Proxy 2 in said second domain.

4. The UE of claim 3 configured as a wireless UE wherein said mobile platform is a U-100 mobile platform.

5. The UE of claim 3 wherein the mobile platform is configured to support GPRS for the Global System for Mobile Telecommunications (GSM/GPRS) and wideband code division multiple access (WCDMA).

6. The UE of claim 3 wherein said mobile platform configured for dual-mode use.

7. A wireless transmit receive unit (WTRU) having a proxy agent for wireless communication within a wireless network system and configured to operate in selected domain and to communicate with a third party application/content server in an external domain that is external to the selected domain, the WTRU being further configured to generate an Invite communication;

said proxy agent being configured to;

invoke a general packet radio service (GPRS) attach responsive to said Invite communication;

establish a packet data protocol (PDP) context bearer employing a PDP context establishment procedure;

perform a directory name service (DNS) lookup and identifying the IP address, port and transport protocol for a proxy server (Proxy 2) in the external domain;

establish a packet switch (PS) call to the Proxy 2 in the external domain; and

transmit an Invite communication to the Proxy 2 to initiate a media session directly between the WTRU and the third party application/content server.