| 摘要 |
In one exemplary embodiment, there is provided a method of operating a terminal device, the terminal device being capable of access network selection, traffic steering and/or traffic aggregation through a network node in a first network operating according to a first radio access technology, RAT, and a network node operating according to a second RAT, the method comprising storing (101) a set of identifiers of network nodes operating according to the second RAT that can be used for access network selection, traffic steering and/or traffic aggregation; receiving (103) an update signal, the update signal indicating one or more identifiers of network nodes operating according to the second RAT that are to be added to and/or removed from the stored set of identifiers; updating (105) the stored set of identifiers based on the update signal; and performing (107) an action using the updated set of identifiers; wherein, when the stored set of identifiers comprises two or more identifiers and the update signal indicates one or more identifiers of network nodes operating according to the second RAT that are to be removed from the stored set of identifiers such that the updated set of identifiers comprises one or more identifiers of network nodes operating according to the second RAT, the action comprises attempting to connect to, or maintaining a connection to, a network node operating according to the second RAT having an identifier in the updated set of identifiers. An user terminal, being capable of traffic steering and/or traffic aggregation, that has stored a set of identifiers of WI_AN APs received from LTE eNB receives an update signal, updates the set of identifiers and attempts to connect to, or maintains a connection to an AP in a WLAN having an identifier comprised by the updated set of identifiers. An eNB being used by a user terminal for traffic steering or traffic aggregation, the eNB receives from the terminal an indication that an identifier of a WLAN AP, the terminal was using for traffic steering or traffic aggregation, has been removed from a set of identifiers, and suspending tor the terminal. An user terminal, on or following disconnection from an WLAN AP that was used for traffic steering or traffic aggregation, performing a procedure to prevent the loss of data packets sent to the AP by the UE device or an eNB prior to the disconnection. |
