US 6,788,676 B2Granted

User equipment device enabled for SIP signalling to provide multimedia services with QoS

AssigneeNokia Corporation

InventorsTinna Partanen, Jounì Rapakko, Markku Ojala, Vlad A. Stirbu

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Abstract

A user equipment (UE) device (11) including a mobile terminal (MT) (11b 11b′) coupled to a terminal equipment (TE) device (11a) including an IP Multimedia Subsystem (IMS) proxy adjunct (P+) for use by the TE (11a) in making multimedia service requests for IP communications with a desired end-to-end QoS, the end-to-end including the local connection and a network supporting QoS, e.g. an UMTS network (12) having as an extension of its packet-switched core network (12b) an IMS (12c) providing multimedia services with selected QoS. The IMS proxy adjunct (P+) is implemented to make extensions to messages according to any protocol providing a session description protocol (SDP) component, such as SIP or RTSP, so as to ensure the selected QoS. In addition, a mechanism is provided by which the MT (11b′) informs the IMS (12c) when it has IMS proxy capabilities.

Claims14

Dependent claims

A user equipment (UE) device (11) including a mobile terminal (MT) (11b 11b′) coupled to a terminal equipment (TE) device (11a), for use in multimedia communication requests for internet protocol (IP) communications across a packet switched communication network (12) where the multimedia communication requests are made using signaling according to a predetermined protocol, the TE (11b) including a user agent (UATE) for providing a communication establishment message (INVITE) as part of the signaling and including a session description protocol (SDP) component, the UE device (11) characterized by:

a) an IMS proxy adjunct (P+), located in the TE device (11a), responsive to the communication establishment message (INVITE) and other messages including the SDP component, for making extensions to the communication establishment message (INVITE) and other messages by extending the SDP component so as to reserve resources ensuring a predetermined quality of service (QoS) for the IP communications, and for originating and terminating messages according to the predetermined protocol on behalf of the user agent (UATE) in the TE device (11a) so that the packet switched communication network (12) need not take into account the operation of the IMS proxy adjunct (P+);
and
b) an IP router and QoS manager (Q), located in the MT (11b 11b′), responsive to control signals provided by the IMS proxy adjunct (P+), for providing QoS using access network specific procedures to open QoS enabled IP flows, and routing IP packets to different QoS enabled IP flows.

A method for use by user equipment (UE) device (11) including a mobile terminal (MT) (11b 11b′) coupled to a terminal equipment (TE) device (11a), the method for use in multimedia communication requests for internet protocol (IP) communications across a packet switched communication network (12) where the multimedia communication requests are made using signaling according to a predetermined protocol, the TE (11b) including a user agent (UATE) for providing a communication establishment message (INVITE) as part of the signaling and including a session description protocol (SDP) component, the method characterized by:

a) having an IMS proxy adjunct (P+), located in the TE device (11a), respond to the communication establishment message (INVITE) and other messages including the SDP component by making extensions to the communication establishment message (INVITE) and other messages by extending the SDP component so as to reserve resources ensuring a predetermined quality of service (QoS) for the IP communications, and by originating and terminating messages according to the predetermined protocol on behalf of the user agent (UATE) in the TE device (11a) so that the packet switched communication network (12) need not take into account the operation of the IMS proxy adjunct (P+);
and
b) having an IP router and QoS manager (Q), located in the MT (11b 11b′), respond to control signals provided by the TMS proxy adjunct (P+) by providing QoS using access network specific procedures to open QoS enabled IP flows, and routing TP packets to different QoS enabled IP flows.

Dependencies are inferred from the claim text.

Facts

Application: 10/285,341Filed 30 Oct 2002
Published: US 2004/0085949 A16 May 2004
Granted: 7 Sep 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

H04L 47/801
Actions related to the user profile or the type of traffic: real time traffic
H04L 47/15
Flow control; Congestion control: in relation to multipoint traffic
H04L 47/70
Traffic control in data switching networks: admission control; Resource allocation
H04L 47/72
Admission control; Resource allocation: using reservation actions during connection setup