FIELD: electrical communication engineering.
SUBSTANCE: invention relates to communication and more specifically to a method and a device for processing data. Method comprises controlling, by a terminal device, a current transmission state of a copied data according to a first indication information, wherein the first indication information is used to indicate whether the transfer function of the copied data is included; and processing by the terminal device according to the current state of the transfer function of the copied data of each RLC service data unit (SDU) in a first radio access control (RLC) cache memory and a second RLC cache memory, wherein the first RLC cache memory corresponds to the first RLC entity and the second RLC cache memory corresponds to the second RLC entity.
EFFECT: higher reliability of transmitting data owing to possibility of avoiding resource consumption caused by retransmission of a second RLC PDU.
11 cl, 5 dwg
