IMS node, network node and methods for handling communication in a wireless communication network

1 . A method performed by an Internet Protocol (IP) Multimedia Subsystem (IMS) node for handling communication in a wireless communication network, the method comprising:

transmitting to a network node data indicating a notification of a direction for a communication and information related to an additional service for the communication;

receiving, from the network node, an indication of an action related to the communication and/or data related to the additional service; and

after having received the data related to the additional service, triggering an event related to the additional service.

2 . The method of claim 1 , wherein the event comprises: to add or modify media resources to a media resource function (MRF); play announcement and continue communication to a first participant; and/or continue communication from a first participant to a second participant.

3 . The method of claim 1 , wherein the IMS node comprises a Telephony Application Server (TAS) and the network node comprises a representational state transfer application.

4 . A method performed by a network node for handling communication in a wireless communication network, the method comprising:

receiving from an Internet Protocol (IP) Multimedia Subsystem (IMS) node, data indicating a notification of a direction for a communication and information related to an additional service for the communication;

determining whether to transmit data related to the additional service to the IMS node based on the received information; and

in case determining to transmit the data, transmitting to the IMS node, an indication of an action related to the communication and/or the data related to the additional service, and in case determining not to transmit the data, transmitting to the IMS node, an indication of an action related to the communication.

5 . The method of claim 4 , wherein the network node comprises a representational state transfer (REST) application; and/or the IMS node comprises a Telephony Application Server (TAS), and/or a representational state transfer application server (REST AS).

6 . The method of claim 4 , wherein the information related to the additional service is received from the IMS node as an information element of a CallNotification message.

7 . An IP Multimedia Subsystem (IMS) node for handling communication in a wireless communication network, the IMS node comprising:

a memory; and

processing circuitry coupled to the memory, wherein the IMS node is configured to:

transmit to a network node, data indicating a notification of a direction for a communication and information related to an additional service for the communication;

receive from the network node, an indication of an action related to the communication and/or data related to the additional service; and

after having received the data related to the additional service, trigger an event related to the additional service.

8 . The IMS node of claim 7 , wherein the event comprises:

to add or modify media resources to a media resource function;

play announcement and continue communication to a first participant; and/or

continue communication from a first participant to a second participant.

9 . The IMS node of claim 7 , wherein

the IMS node comprises a Telephony Application Server, and

the network node comprises a representational state transfer application.

10 . The IMS node of claim 9 , wherein the IMS node is configured to, prior to transmitting the data indicating the notification and the information related to the additional service,

receive a communication request from a first participant;

invoke a representational state transfer application server (REST AS); and

forward information relating to the communication request to the REST AS.

11 . The IMS node of claim 7 , wherein

the IMS node comprises a representational state transfer (REST) application server (AS), and

the network node comprises a REST application.

12 . The IMS node of claim 11 , wherein the IMS node is configured to, prior to transmitting the data indicating the notification and the information related to the additional service,

receive a communication request from a first participant; and

decide what information related to the additional service to transmit.

13 . The IMS node of claim 7 , wherein the information related to the additional service is comprised in an information element of a CallNotification message.

14 . The IMS node of claim 7 , wherein the data related to the additional service is comprised in an information element of an Action message.

15 . A network node for handling communication in a wireless communication network, the network node comprising:

a memory; and

processing circuitry coupled to the memory, wherein the network node is configured to:

receive, from an IP Multimedia Subsystem (IMS) node, data indicating a notification of a direction for a communication and information related to an additional service for the communication;

determine whether to transmit data related to the additional service to the IMS node based on the received information; and

in case having determined to transmit the data, transmit to the IMS node an indication of an action related to the communication and/or the data related to the additional service, and in case having determined not to transmit the data, transmit to the IMS node, an indication of an action related to the communication.

16 . The network node of claim 15 , wherein

the network node is configured to comprise a representational state transfer (REST) application; and/or

the IMS node is configured to comprise a Telephony Application Server and/or a representational state transfer application server.

17 . The network node of claim 15 , wherein the information related to the additional service is adapted to be received from the IMS node as an information element of a CallNotification message.

18 . The network node of claim 15 , wherein the data related to the additional service is adapted to be transmitted by the network node as an information element of an Action message.