| 摘要 |
A controller in a network manages resources to user equipment during data transmission. An uplink and a downlink are formed between the controller and the user equipment. The controller sends a last packet data unit to the user equipment that signals the end of transmission. Upon receipt, the user equipment sends an indicator to the controller to indicate a termination of the transmission in the uplink. The controller determines a traffic status in the downlink. The controller releases the resource according to the indicator and the traffic status.
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