Womble Bond Dickinson (US) LLP
Data transmission method and device for determining a radio bearer for handover
This application provides a data transmission method and device. In a process in which a terminal device is handed over from a source access network device to a target access network device, the source access network device processes buffered packet data convergence protocol (PDCP) data, so that when a forwarding tunnel is a tunnel of a session granularity or a group granularity, the target access network device accurately forwards data in the handover process. The method includes: encapsulating, by a source access network device, indication information in an encapsulation header of PDCP data, where the indication information is used to indicate a radio bearer used for sending the PDCP data by a target access network device; and sending, by the source access network device to the target access network device, the PDCP data in which the indication information is encapsulated.
HUAWEI TECHNOLOGIES CO., LTD.
H H H H H H
H04W H04W H04W H04W H04W H04W
additional inventional inventional inventional inventional inventional
Yan Yongcui
Li Li