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US 9,426,250 B2Granted
Method, system and terminal for multimedia session establishment
AssigneeNokia Technologies Oy
InventorJuha Rasanen
Life of this patent
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Abstract
The described method, system and terminals may allow the sending capability information from a first terminal to a second terminal in a capability exchange performed without, or prior to, conducting a call between the first and second terminals. The capability information may include at least one of multimedia call related parameters such as a codec for example, or network capability related information. A session initiation protocol may be used for sending the multimedia call related parameters. A service change may thus rapidly be performed.
Claims17
A method comprising:
- sending, by a first terminal, capability information of the first terminal to a second terminal, wherein the sending occurs without, or prior to, a circuit-switched call conducted between the first terminal and the second terminal;
- receiving, at the first terminal, capability information of the second terminal;
- establishing the circuit-switched call between the first terminal and the second terminal;
- and
- initiating, by the first terminal, a service change during the circuit-switched call conducted between the first terminal and the second terminal, wherein the first terminal initiates the service change by at least sending, to the second terminal, a service change request using a session initiation protocol during the circuit-switched call, wherein the capability information of the first terminal and the second terminal comprises multimedia call related parameters and an indication that a visited network supports a service change between a speech only call and a multimedia call.
2 more elements
An apparatus comprising:
- at least one processor;
- and
- at least one memory including computer program code, the at least one processor, the at least one memory, and the computer program code configured to cause the apparatus to at least:
- send capability information to another apparatus in a packet switched capability exchange performed prior to conducting a circuit-switched call with the other apparatus;
- receive capability information of the other apparatus;
- establish the circuit-switched call with the other apparatus;
- and
- initiate a service change during the circuit-switched call with the other apparatus, wherein the apparatus initiates the service change by at least sending, to the other apparatus, a service change request using a session initiation protocol during the circuit-switched call conducted with the other apparatus, wherein the capability information of the apparatus and the other apparatus comprises multimedia call related parameters and an indication that a visited network supports a service change between a speech only call and a multimedia call.
5 more elements
A method comprising:
- sending capability information of a first terminal to a second terminal, wherein the sending occurs without, or prior to, a circuit-switched call conducted between the first terminal and the second terminal, and wherein the capability information indicates that the first terminal supports a packet switched service capability and a circuit switched service capability;
- receiving, at the first terminal, capability information of the second terminal;
- establishing the circuit-switched call between the first terminal and the second terminal;
- initiating, by the first terminal, a service change during the circuit-switched call between the first terminal and the second terminal, wherein the first terminal initiates the service change by at least sending, to the second terminal, a service change request using a session initiation protocol during the circuit-switched call,
- wherein the capability information of the first terminal and the second terminal comprises multimedia call related parameters and an indication that a visited network supports a service change between a speech only call and a multimedia call.
2 more elements
Dependencies are inferred from the claim text.