OPTIMIZING IN-ORDER DELIVERY OF DATA PACKETS DURING WIRELESS COMMUNICATION HANDOVER

摘要

Systems and methodologies are described that facilitate processing service data units (SDU) in-order during communication handover in wireless networks. In particular, for mobile devices using re-transmission schemes, SDUs can be processed in-order by indicating to a target base station an index of a last SDU received in-order before handing off communication to the target base station. Additionally, SDUs received subsequent to one or more non-acknowledged SDUs can be forwarded to the target base station. Utilizing this information, the target base station can determine one or more SDUs the mobile device is preparing to re-transmit and can wait for this SDU before processing subsequently received SDUs. Also, a timer can be utilized to end a waiting period for the SDU.

主权项

1. A method of data packet management associated with a handover of a mobile device to a target base station in wireless communication networks, comprising:
receiving, from a source base station, an indication of a first missing service data unit (SDU), wherein the first SDU subsequent to a last SDU received in-order at the source base station from a mobile device; receiving, from the source base station, an indication of one or more subsequent SDUs received at the source base station; and determining one or more missing SDUs based on the indication of the first missing SDU and the indication of one or more subsequent SDUs highest index of the one or more subsequent SDUs.