Packet-based conversational service for a multimedia session in a mobile communications system
First Claim
1. A method for establishing a session involving a mobile radio terminal configured to access a packet-based access network via a radio access network, comprising:
- establishing a first bearer extending between the mobile terminal and the packet-based access network;
using the first bearer to initiate a session that includes a packet-based voice communication;
the first bearer carrying one or more session messages for implementing a packet-based voice service;
establishing a second bearer for the session extending between the mobile terminal and the packet-based access network to carry voice packets associated with the packet-based voice service; and
establishing a third bearer for the session extending between the mobile terminal and the packet-based access network to carry control messages associated with the packet-based voice service,wherein each of the first, second, and third bearers is established with a quality of service tailored to characteristics of the information being carried over that bearer.
1 Assignment
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Accused Products
Abstract
An important objective for third generation mobile communications systems is to provide IP services, and a very important part of these services will be the conversational voice. The conversational voice service includes three distinct information flows: session control, the voice media, and the media control messages. In a preferred embodiment, based on the specific characteristics for each information flow, each information flow is allocated its own bearer with a Quality of Service (QoS) tailored to its particular characteristics. In a second embodiment, the session control and media control messages are supported with a single bearer with a QoS that suits both types of control messages. Both embodiments provide an IP conversational voice service with increased radio resource efficiency and QoS.
101 Citations
48 Claims
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1. A method for establishing a session involving a mobile radio terminal configured to access a packet-based access network via a radio access network, comprising:
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establishing a first bearer extending between the mobile terminal and the packet-based access network; using the first bearer to initiate a session that includes a packet-based voice communication; the first bearer carrying one or more session messages for implementing a packet-based voice service; establishing a second bearer for the session extending between the mobile terminal and the packet-based access network to carry voice packets associated with the packet-based voice service; and establishing a third bearer for the session extending between the mobile terminal and the packet-based access network to carry control messages associated with the packet-based voice service, wherein each of the first, second, and third bearers is established with a quality of service tailored to characteristics of the information being carried over that bearer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for establishing a session that includes a packet-based voice communication involving a mobile radio terminal that is configured to access a General Packet Radio Services (GPRS) network via a radio access network, comprising:
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establishing for the session a first Packet Data Protocol (PDP) context for session messages relating to a packet-based voice service and supporting a first quality of service selected for session messages; establishing for the session a second PDP context for voice packets and supporting a second quality of service selected for voice packets; and establishing for the session a third PDP context for control messages associated with the voice packets and supporting a third quality of service selected for control messages, wherein each of the first, second, and third PDP contexts is established with a quality of service tailored to characteristics of the information associated with that PDP context. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A mobile terminal for use in a mobile communications system that includes a packet-based access network, comprising electronic circuitry configured to perform the following tasks related to establishing an IP session:
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coordinate with a node in the packet-based access network to establish a first bearer extending between the mobile terminal and the packet-based access network; use the first bearer to initiate an IP session including a conversational IP service, the first bearer for carrying one or more session messages for implementing the conversational IP service; coordinate with the packet-based access network node to establish a second bearer for the IP session extending between the mobile terminal and the packet-based access network to carry voice packets associated with the conversational IP service; and coordinate with the packet-based access network node to establish a third bearer for the IP session extending between the mobile terminal and the packet-based access network to carry control messages associated with the conversational IP service, wherein each of the first, second, and third bearers is established with a quality of service tailored to characteristics of the information being carried over that bearer. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A mobile terminal for use in a mobile communications system that includes a radio access network coupled to a General Packet Radio Services (GPRS) network, comprising electronic circuitry configured to perform the following tasks related to establishing an IP session:
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coordinate with a Gateway GPRS Support Node (GGSN) node in the GPRS network to establish a first Packet Data Protocol (PDP) context for session messages relating to a conversational IP service that supports a first quality of service selected for session messages; coordinate with a GGSN node to establish a second PDP context for voice packets that supports a second quality of service selected for voice packets; and coordinate with the GGSN node to establish a third PDP context for control messages associated with the voice packets that supports a third quality of service selected for control messages, wherein each of the first, second, and third PDP contexts has a quality of service tailored to characteristics of the information associated with that PDP context. - View Dependent Claims (35, 36, 37)
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38. A node for use with a packet-based access network, comprising electronic circuitry configured to perform the following tasks related to establishing an IP session:
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coordinate with a mobile radio terminal to establish a first bearer extending between the mobile radio terminal and the packet-based access network, wherein the first bearer is useable to establish the IP session including a conversational IP service and to carry one or more session messages for implementing the conversational IP service; coordinate with the mobile radio terminal to establish a second bearer for the IP multimedia session extending between the mobile radio terminal and the packet-based access network to carry voice packets associated with the conversational IP service; and coordinate with the packet-based access network node to establish a third bearer for the IP session extending between the mobile radio terminal and the packet-based access network to carry control messages associated with the conversational IP service, wherein each of the first, second, and third PDP contexts has a quality of service tailored to characteristics of the information associated with that PDP context. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification