Method and arrangement for establishing a communication session for multimedia
First Claim
1. A method of establishing a packet-switched multimedia session for a mobile terminal connected to a mobile access network for the communication of media, comprising the following steps:
- obtaining a first default Radio Access Bearer RAB of a pre-established PDP context,starting the multimedia session by communicating said media over the first default RAB,monitoring and evaluating a quality of communicated media according to a predetermined monitoring algorithm, simultaneously with the media communication over the first default RAB, andif the monitored quality is deemed unacceptable according to said monitoring algorithm, obtaining a media-adapted second RAB based on quality requirements of the ongoing media communication, andcontinuing the media communication over the second RAB.
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Accused Products
Abstract
A method and arrangement for establishing a packet-switched multimedia session for a mobile terminal connected to a mobile access network. A first Radio Access Bearer RAB is obtained, and the multimedia session is started by communicating media over the first RAB. Simultaneously with the media communication, a quality of communicated media is monitored and evaluated. If the monitored quality is deemed unacceptable, a media-adapted second RAB is obtained, and the session is continued over the second RAB. Thereby, it is not necessary to delay the communication of media by waiting for the second RAB to be obtained.
19 Citations
39 Claims
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1. A method of establishing a packet-switched multimedia session for a mobile terminal connected to a mobile access network for the communication of media, comprising the following steps:
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obtaining a first default Radio Access Bearer RAB of a pre-established PDP context, starting the multimedia session by communicating said media over the first default RAB, monitoring and evaluating a quality of communicated media according to a predetermined monitoring algorithm, simultaneously with the media communication over the first default RAB, and if the monitored quality is deemed unacceptable according to said monitoring algorithm, obtaining a media-adapted second RAB based on quality requirements of the ongoing media communication, and continuing the media communication over the second RAB. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 38)
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17. An arrangement for establishing a packet-switched multimedia session for a mobile terminal connected to a mobile access network for the communication of media, comprising:
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means for obtaining a first default Radio Access Bearer RAB of a pre-established PDP context, means for starting the multimedia session by communicating said media over the first default RAB, means for monitoring and evaluating a quality of communicated media according to a predetermined monitoring algorithm, simultaneously with the media communication over the first default RAB, and means for obtaining a media-adapted second RAB based on quality requirements of the ongoing media communication, if the monitored quality is deemed unacceptable according to said monitoring algorithm, such that the session can continue over said second RAB. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 39)
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33. An arrangement in a mobile terminal, when connected to a mobile access network, for establishing a packet-switched multimedia session for the communication of media, comprising:
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a communication unit configured to obtain a default first Radio Access Bearer RAB of a pre-established PDP context, and to start the multimedia session by communicating media over the first default RAB, and a processor configured to monitor and evaluate a quality of communicated media according to a predetermined monitoring algorithm, simultaneously with the media communication over the first default RAB, and to trigger the communication unit to obtain a media-adapted second RAB based on quality requirements of the ongoing media communication, if the monitored quality is deemed unacceptable according to said monitoring algorithm, such that the session can continue over said second RAB. - View Dependent Claims (34)
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35. A quality monitor for monitoring and evaluating a quality of communicated media, comprising:
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a measurement receiver for receiving quality measurements regarding an ongoing multimedia session for a mobile terminal using a first default RAB of a pre-established PDP context, a processor for evaluating the quality measurements and for determining whether a media-adapted second RAB is needed to fulfill quality requirements of the ongoing multimedia session, and a PDP context triggering unit configured to send a message to the mobile terminal or to a GGSN node in the access network, if said quality is deemed unacceptable according to a predetermined monitoring algorithm, said message triggering a media-adapted second RAB based on quality requirements of the ongoing media communication, such that the session can continue over said second RAB. - View Dependent Claims (36, 37)
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Specification