CROSS-ENB HANDOVER METHOD AND EVOLVED NODEB

摘要

Provided are a cross-eNB handover method and an evolved NodeB. The handover method includes: the user plane of a target side eNB receiving a handover indication message and then judging whether or not a sequence number status transfer (SN Status Transfer) message is received before receiving the handover indication message (S302); and if it is not received, then caching the handover indication message and processing same until the SN Status Transfer message is received and processed (S304). In the present invention, the handover indication message of the user plane which arrives first is cached and processed until an SN Status Transfer message is received and processed, thereby ensuring the accuracy of the PDCP sequence number information when the user side of the target eNB processes the downlink message of the PDCP layer, reducing packet loss due to inconsistency of PDCP sequence number information, and thus achieving the effects of lossless data transmission during handover and improving user experience.