Data processing method and device

A data processing and processing unit technology, applied in the direction of secure communication devices, digital transmission systems, electrical components, etc., can solve problems such as message decryption failure, PDU sorting error, data service interruption, etc., to achieve successful decryption and ensure correct sorting , to avoid the effect of business interruption

Inactive Publication Date: 2017-01-18
ZTE CORP
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Problems solved by technology

However, when the UE side receives the PDU, the reordering window to which it belongs has been decrypted by the delivery user message, that is, the PDCP HFN plus 1 processing cannot be performed. If the plus 1 processing is not performed, subsequent PDU sorting errors occur, and subsequent reports File decryption will fail, resulting in data service interruption

Method used

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Embodiment 1

[0050] In this embodiment, each unit of the apparatus of the present invention is built into the eNB, Figure 6 It is the method flowchart of the first embodiment of the present invention, as Figure 6 shown, including:

[0051] Step 600, MAC of eNB receives TB from UE;

[0052] Step 601, MAC carries air interface transmission time when sending PDU to RLC;

[0053] In this step, the air interface transmission time is: the time when the MAC of the eNB instructs the PHY of the UE to send the TB for the first time;

[0054] It should be noted that whether the retransmission identifier or related information is used for the first transmission can be judged and obtained.

[0055] Step 602, when the RLC receives a PDU that falls outside the reordering window, judge whether the PDU is later than the air interface transmission time of the last PDU in the reordering window according to the air interface transmission time;

[0056] When the air interface transmission time of the PDU...

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Abstract

The invention discloses a data processing method and device. The data processing method comprises the step of carrying time information in each protocol data unit (PDU) firstly transmitted to radio link control (RLC). The data processing method further comprises the steps of judging whether the first transmission time of the last received PDU in a re-ranking window is later than the first transmission time of a PDU falling outside the re-ranking window or not according to the carried time information; and discarding the PDU falling outside the re-ranking window if the first transmission time of the last received PDU in the re-ranking window is later than the first transmission time of the PDU falling outside the re-ranking window. According to the data processing method, discarding processing is carried out on the PDU which is earlier than the first transmission time of the last PDU in the re-ranking window and falls outside the re-ranking window through the time information, correct ranking of UE for the PDUs is ensured, successful decryption for messages is realized, and service interruption caused by not discarding the PDU which is earlier than the first transmission time of the last PDU in the re-ranking window and falls outside the re-ranking window is avoided.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method and device for realizing data processing. Background technique [0002] figure 1 It is a schematic diagram of the long-term evolution user plane protocol stack of the prior art, such as figure 1 As shown, in the protocol stack of the evolved terrestrial radio access network node B (eNB, E-URTAN Node B) and the user equipment (UE, UserEquipment), from the upper layer to the lower layer includes: Packet Data Convergence Protocol PDCP (PacketData Convergence Protocol) layer , Radio link control RLC (Radio Link Control) layer, multimedia transmission control (MAC, Medium Access Control) layer, physical layer PHY (Physical layer). When the sending end needs to transmit service data to the receiving end, the sending end processes the received service data through the PDCP layer, RLC layer, and MAC layer of the eNB, and finally reaches the PHY layer of the sending end, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L1/00
CPCH04L1/001H04L69/322H04L9/40
Inventor 王达菲
Owner ZTE CORP
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