Telefonaktiebolaget LM Ericsson (publ)
Methods responding to SCG failure in DC communications and related wireless terminals and network nodes

Abstract:

According to a first exemplary embodiment, a wireless terminal may provide DC communication through an MN using an MCG over a first radio interface between the wireless terminal and the MN and through a SN using a SCG over a second radio interface between the wireless terminal and the SN. A split SRB may be configured for the wireless terminal using DC through the MCG with the MN and through the SCG with the SN and the wireless terminal may be configured to use the SCG for the split SRB without using the MCG for the split SRB. Responsive to detecting failure of the SCG while configured to use the SCG for the split SRB without using the MCG for the split SRB, an SCG failure information message regarding failure of the SCG may be transmitted to the master node using the MCG.