| 摘要 |
It is disclosed a first method (and related first apparatus) comprising transmitting, in a handover request message, an indication of a first protocol version; a second method (and related second apparatus) comprising receiving, in the handover request message, the indication, deciding, based on the received indication and a second protocol version, on a value of an information element comprised in a handover request acknowledgement message to be transmitted, the information element indicating usage of a first signaling scheme or a second signaling scheme different from the first signaling scheme, and transmitting the handover request acknowledgement message comprising the information element; and in the first method receiving the handover request acknowledgement message comprising the information element; and a third method (and related third apparatus) comprising receiving the handover command message comprising the information element, and configuring according to one of the first and second signaling schemes indicated by the information element. |
