METHOD, DEVICES AND COMPUTER PROGRAMME FOR TRANSFERRING SESSION FROM PACKET SWITCHED NETWORK TO CIRCUIT SWITCHED ACCESS NETWORK Russian patent published in 2015 - IPC H04W36/00 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to mobile communication. A Mobility Management Entity receives a service type indicator from a gateway node. The service type indicator indicates a type of service for the session and is associated with bearers used for the session. The Mobility Management Entity subsequently receives, from an eNodeB, an indication that the session is to be transferred from the packet switched network to the circuit switched access network. The Mobility Management Entity determines the bearers associated with the session using the service type indicator, and initiates transfer of the session using those bearers.

EFFECT: performing session transfer from a packet switched access network to a circuit switched access network while ensuring that the correct bearers are transferred regardless of whether or not identifiers such as Quality of Service Class Identifier (QCI) values have been assigned to other types of service.

13 cl, 8 dwg