Method of managing data blocks during handover

摘要

A method of enabling a source base station (BS) to manage an uplink data block during handover from the source BS to a target BS in a wireless communication system is provided. The method includes informing the target BS of a sequence number of a uplink data block to be received from a user equipment (UE) and receiving from the target BS the uplink data block corresponding to the sequence number. Data is properly shared by a source base station (BS) and a target BS during handover. Thus, processing capacity of the target BS can be reduced and overhead on network interface can also be reduced.

主权项

1. A method of enabling a source base station (BS) to manage uplink data blocks during handover from the source BS to a target BS in a wireless communication system, the method comprising:
receiving a plurality of uplink data blocks from a user equipment (UE) currently connected to the source BS; transmitting a handover command message to the UE; informing the target BS of a sequence number of uplink data blocks that are not successfully received at the source BS from the UE; informing the UE of the sequence number of uplink data blocks that are not successfully received at the source BS from the UE, in order for the UE to transmit uplink data blocks to the target BS including the uplink data blocks that are not successfully received at the source BS; receiving from the target BS uplink data blocks, wherein a sequence number of the uplink data blocks received from the target BS is smaller than a highest sequence number that has been previously received at the source BS; and reordering the plurality of uplink data blocks received from the UE with the uplink data blocks received from the target BS.