Method and device for receiving and processing data of radio link control layer

A device, comprising a processor, a transceiver and a memory, wherein:

• the transceiver is configured to receive a target radio link control (RLC) protocol data unit (PDU);
• and
• the memory has executable instructions stored thereon that when executed by the processor cause the processor to:
• when a data field of the target RLC PDU merely comprises a segment of a complete RLC service data unit (SDU), process the target RLC PDU or discard the target RLC PDU according to a current operating state of a re-assembly timer corresponding to a value of a sequence number (SN) comprised in the target RLC PDU, wherein the target RLC PDU is one of a plurality of RLC PDUs, the plurality of RLC PDUs has SNs of a same value, and the plurality of RLC PDUs is capable of being re-assembled into the complete RLC SDU, and the current operating state of the re-assembly timer is counting state;
• wherein the memory further has executable instructions stored thereon that when executed by the processor cause the processor to:
• when it is determined that other RLC PDU, except for the target RLC PDU, among the plurality of RLC PDUs have been received by the transceiver before the target RLC PDU is received, re-assemble the plurality of RLC PDUs and end the re-assembly timer,
• when it is determined that merely part of RLC PDU, except for the target RLC PDU, among the plurality of RLC PDUs have been received before the target RLC PDU is received by the transceiver, determine whether the re-assembly timer is expired, and when it is determined that the re-assembly timer is expired, discard a RLC PDU that has been received before the re-assembly timer get expired among the plurality of RLC PDUs, wherein the RLC PDU that has been received comprises the target RLC PDU.