QUALITY OF SERVICE SUPPORT FOR MACHINE-TO-MACHINE APPLICATIONS

• US 20130179583A1
• Filed: 01/04/2013
• Published: 07/11/2013
• Est. Priority Date: 01/06/2012
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Foti, George
• Granted Patent: US 9,143,548 B2
• Time in Patent Office: Days
• US Class Current: 709/228
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

A Quality of Service functionality is provided for Machine to machine device communications that allows a single IMS session to support a plurality of different data streams. In one embodiment a single IMS session is used to support a plurality of different data streams that arise from a single application type, while in another embodiment, a single IMS session is used to support a plurality of different data streams across a plurality of different devices and applications. Through the use of a single IMS session, signaling is reduced and QoS can be offered without impacting a large number of nodes. An IMS User Agent is deployed to aid in providing this functionality.

Claims

1. A method of supporting Quality of Servicee, QoS, in an Internet Mulitimedia Subsystem, IMS, network comprising:

receiving, at a node in an IMS core network, a registration;

receiving from a node associated with the received registration a request to create an IMS session to support a machine-to-machine data session;

responsive to determining that a suitable IMS session already exists, modifying session information associated with the suitable IMS session to allow the suitable session to carry a content stream associated with the request to create a session, and to adjust an existing quality of service associated with the suitable session in accordance with the received request to create an IMS session.

2. The method of claim 1 wherein the suitable IMS session contains data streams associated with a plurality of requests to create IMS sessions received from the same application type.

3. The method of claim 2 wherein an application ID is included in IMS session level data associated with the suitable IMS session.

4. The method of claim 1 wherein the suitable IMS session contains data streams associated with a plurality of device and application pairings.

5. The method of claim 4 wherein an application ID is included with an SDP associated with the suitable IMS session.

6. The method of claim 1 wherein the node in the IMS core network is a Proxy Call Session Control Function (P-CSCF).

7. The method of claim 6 wherein the step of modifying session information includes signaling between the P-CSCF and the Policy and Charging Rule Function and the Serving Call Session Control Function.

8. The method of claim 1 wherein the steps of receiving a registration and receiving a request to create an IMS session include receiving a registration requests and a request to create an IMS session through a message delivered using the hypertext transfer protocol.

9. The method of claim 1 wherein the steps of receiving a registration and receiving a request to create an IMS session include receiving a registration requests and a request to create an IMS session through a message delivered using the Session Initiation Protocol.

10. A method for establishing an Internet Multimedia Subsystem, IMS, session on behalf of a machine-to-machine device, the IMS session having an associated Quality of Service, QoS, policy, the method comprising:

receiving, from a requesting node, a request for establishment of an IMS session having a QoS policy, the requested IMS session terminating at a machine-to-machine device;

registering the requested session with an instruction to a node in an IMS Core Network to modify QoS parameters of an existing IMS session in accordance with the QoS policy of the requested session; and

upon receipt of an indication that the modification of the QoS parameters have been completed, creating a connection between the requesting node and a second terminal node using the existing IMS session, and informing both the requesting node and the second terminal node of the connection parameters.

11. The method of claim 10 wherein the received request is an HTTP request received from the machine-to-machine device.

12. The method of claim 11 wherein the request is received from a gateway acting on behalf of the device.

13. The method of claim 10 wherein the request is received from a network service capability layer.

14. The method of claim 10 wherein the node in the IMS core network is a Proxy Call Session Control Function.

15. The method of claim 10 wherein the requesting node is one of a machine-to-machine device and a machine-to-machine device gateway, and the second terminal node is a network service capacity layer.

16. The method of claim 10 wherein the requesting node is a network service capacity layer and the second terminal node is one of a machine-to-machine device and a machine-to-machine device gateway.

17. A machine-to-machine user agent node comprising:

a network interface for interacting with external nodes in a network;

a data repository for storing instructions; and

a processor, which upon execution of instructions stored in the data repository;

receives, over the network interface, requests for establishing an Internet Multimedia Subsystem, IMS, session having a Quality of Service, QoS, policy;

transmits to a node in an IMS Core Network, over the network interface, a request to register the requested session with an instruction to modify QoS parameters of an existing IMS session in accordance with the policy of the requested session; and

creating a connection between a node that issued the received request and a second terminal node, the connection using the existing IMS session, to satisfy the received request.