| 摘要 |
<p>A method for service handover in wireless cellular communication system, when a wireless communication terminal device determines to handover after initiating handover request, anchor data path function has determines whether to start ARQ mechanism or sequence number feedback mechanism according to different services, and buffers MAC SDU data packet, sends MAC SDU data packet to terminal through the current serving data path function before handover, the terminal sends feedback information to anchor data path function through target data path function when handover accessing, the anchor data path function send MAC SDU data packet to the terminal through target data path function according to the feedback information, then handover accomplished. The present invention enables service data can still maintain enough integrity during handover process, processing logic for the ARQ mechanism or sequence number feedback mechanism is simple, and reduce the complexity for buffer processing system data and save the buffer space because it only performs buffer in anchor data path function.</p> |
