METHOD AND APPARATUS FOR TRANSMITTING SIP DATA OF IDLE MODE UE IN A MOBILE COMMUNICATION SYSTEM

• US 20090154408A1
• Filed: 01/04/2007
• Published: 06/18/2009
• Est. Priority Date: 01/04/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Sung-Ho, Song, O-Sok, Van Der Verlde, Himke, Van Lieshout, Gert Jan, Jeong, Kyeong-In, Kim, Soeng-Hun, Kwak, No-Jun
• Granted Patent: US 8,335,197 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 76/10 Connection setup
• 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

A method and apparatus are provided for transmitting a Session Initiation Protocol (SIP) message by a User Equipment (UE) in an idle mode in an Internet Protocol Multimedia Subsystem (IMS) system. The UE transmits one combined message of an AS control message and a NAS control message including information indicating transmission of an SIP message, thereby having an effect on an upper node to reduce a delay due to message processing.

Claims

1. A method for transmitting Session Initiation Protocol (SIP) data by an idle mode User Equipment (UE) in a mobile communication Internet Protocol Multimedia Subsystem (IMS) system, the method comprising the steps of:

delivering SIP data received from an upper layer in an idle mode to a Non Access Stratum (NAS) layer;

setting a message type of a NAS control message, by the NAS layer, as a Long Term Evolution (LTE) connection request message comprising the SIP data;

setting an indicator and length information of the SIP data in the NAS control message in front of a part where the SIP data is to be included, generating a single combined message by attaching the SIP data to the rear of the length information of the NAS control message, and delivering the generated single combined message to an Access Stratum (AS) layer;

generating an AS control message by the AS layer, and generating an LTE connection request message by the AS layer by combining the generated combined message with the AS control message;

sending a scheduling request to an Evolved Radio Access Network (E-RAN); and

sending the LTE connection request message to the E-RAN using allocated radio resources in response to a scheduling response message received from the E-RAN.

2. The method of claim 1, further comprising delivering the length information of the SIP data to the NAS layer along with the SIP data.

3. The method of claim 1, wherein the length information of the SIP data is set as provided SIP data packet length information, or is set by measuring a length of the SIP data.

4. A method for transmitting Session Initiation Protocol (SIP) data of an idle mode User Equipment (UE) in a mobile communication Internet Protocol Multimedia Subsystem (IMS) system, the method comprising the steps of:

receiving a Long Term Evolution (LTE) connection request message from the idle mode UE, and checking message type information of a Non Access Stratum (NAS) control message included in the LTE connection request message;

if the message type information indicates an LTE connection request message comprising SIP data, processing NAS control information of the NAS control message, extracting-indicator and length information for the SIP data from the NAS control message, and analyzing the extracted indicator and the length information;

extracting the SIP data from the LTE connection request message;

sending an LTE connection response message to an Evolved Radio Access Network (E-RAN) to set up an SIP Radio Access Bearer (RAB) to the UE;

sending the SIP data to a corresponding destination network node using NAS control information included in the NAS control message; and

sending response SIP data through the SIP RAB, upon receipt of the response SIP data for the SIP data.

5. The method of claim 4, further comprising:

if the message type information does not indicate an LTE connection request message comprising SIP data, extracting SIP data from the NAS control message, and analyzing and managing NAS control information indicated by the message type information.

6. A method for transmitting/receiving data through a Session Initiation Protocol (SIP) in a mobile communication system, the method comprising the steps of:

including data to be transmitted through the SIP in a connection request message composed of Access Stratum (AS) control information needed in an Evolved Radio Access Network (E-RAN) and Non Access Stratum (NAS) control information needed in an Evolved Core Network (E-CN), and sending the connection request message to the E-CN, by an idle mode User Equipment (UE);

setting a Radio Access Bearer (RAB) for transmitting the data using the NAS control information, and sending a connection response message comprising the AS control information to the E-RAN, by the E-CN; and

setting up a Radio Resource Control (RRC) connection for transmitting the data using the AS control information, and sending the connection response message to the UE, by the E-RAN.

7. The method of claim 6, further comprising:

checking deciphering and integrity protection on the connection request message, by the E-CN.

8. The method of claim 6, further comprising:

managing mapping information between the data and the RAB set up for transmission of the data, by the E-CN;

extracting position information from the data, and routing the data corresponding to the position information to a destination network node; and

upon receipt of a response message from the destination network node corresponding to the data to be transmitted through the SIP, sending the response message to the UE through the set RAB using the mapping information.

9. The method of claim 6, further comprising:

including indication information indicating transmission of the data to be transmitted through the SIP, in the NAS control information, by the UE.

10. The method of claim 6, further comprising:

including packet length information of the data to be transmitted through the SIP, in the NAS control information, by the UE.

11. The method of claim 6, further comprising:

setting message type information of the connection request message, as a connection request message comprising the data to be transmitted through the SIP, by the UE.

12. The method of claim 6, further comprising:

transitioning to a connected mode upon receipt of the connection response message, by the UE.

13. The method of claim 12, further comprising:

exchanging the data through the SIP with a destination network node, by the UE, after transitioning from idle mode to the connected mode.

14. A method for transmitting/receiving data through a Session Initiation Protocol (SIP) in a mobile communication system, the method comprising the steps of:

including data to be transmitted through the SIP in a connection request message composed of Access Stratum (AS) control information needed in an Evolved Radio Access Network (E-RAN) and Non Access Stratum (NAS) control information needed in an Evolved Core Network (E-CN), and sending the connection request message to the E-RAN, by an idle mode User Equipment (UE);

performing deciphering and/or integrity protection check on the connection request message, extracting and managing AS control information from the connection request message, and transmitting the connection request message comprising the NAS control information and the data to the E-CN, by the E-RAN;

setting up a Radio Access Bearer (RAB) for transmitting the data using the NAS control information, and sending a connection response message to the E-RAN, by the E-CN; and

setting up a Radio Resource Control (RRC) connection for transmitting the data using the AS control information, and sending the connection response message to the UE, by the E-RAN.

15. A User Equipment (UE) apparatus for transmitting multimedia data through a Session Initiation Protocol (SIP), the UE apparatus comprising:

a data generator for generating multimedia data to be transmitted through the SIP;

a status manager for monitoring a mode of the UE;

a first control message generator for generating a Non Access Stratum (NAS) control message including control information for Radio Access Bearer (RAB) setup due to an idle mode from the status manager, and multimedia data generated from the data generator;

a second control message generator for generating a connection request message including the NAS control message and control information for Radio Resource Control (RRC) setup; and

a transceiver for sending the generated connection request message to an upper node.

16. The UE apparatus of claim 15, wherein the first control message generator generates the NAS control message further including indication information indicating transmission of the multimedia data, and transmission length information of the multimedia data.

17. The UE apparatus of claim 15, wherein the first control message generator sets the NAS control message as a message including message type information indicating a message including the multimedia data transmitted/received through the SIP.

18. The UE apparatus of claim 15, wherein the data generator transmits the generated data to the upper node via the transceiver through a previously set RAB due to a connected mode from the status manager.

19. A Core Network (CN) apparatus for transmitting multimedia data through a Session Initiation Protocol (SIP), the CN apparatus comprising:

a transceiver for receiving a connection request message from a lower node;

a first control information extractor for extracting from the connection request message a Non Access Stratum (NAS) control message including control information for Radio Access Bearer (RAB) setup, which is set as message type information indicating a message including the multimedia data;

a data extractor for extracting the multimedia data from the connection request message according to the message type information;

a RAB setup manger for setting up the RAB to the lower node using the control information;

a NAS control information extractor for routing the multimedia data to a destination network node using the control information;

a mapping information manager for managing mapping information between the destination network node and the RAB set up for transmission of the multimedia data; and

a transceiver for receiving a response message corresponding to the multimedia data from the destination network node, and sending the response message to the lower node.

20. The CN apparatus of claim 19, wherein the first control information extractor extracts the NAS control message including the control information for the RAB setup, which is set as message type information indicating a message including the multimedia data, from the connection request message including the multimedia data transmitted from a User Equipment (UE), the NAS control message, and an Access Stratum (AS) control message including control information for Radio Resource Control (RRC) setup between the UE and a Radio Access Network (RAN).