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A method and device for data processing

A technology of data processing and sending equipment, applied in the field of data processing, can solve problems such as HFN out-of-synchronization, safety operation failure, multiple link rate mismatch, etc., to achieve the effect of ensuring continuity and efficiency and avoiding confusion

Active Publication Date: 2019-09-17
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a method and device for data processing, which is used to solve the problem in the prior art that if there are multiple link rates that do not match the repeating mode, it may cause HFN out of synchronization, thereby causing the problem of security operation failure

Method used

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  • A method and device for data processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] Embodiment 1: AM transmit window.

[0120] When the repeat mode is activated, the PDCP of the transmitting device performs transmission window maintenance.

[0121] Among them, the following variables need to be maintained:

[0122] Next_SN: the SN corresponding to the next newly sent PDU;

[0123] Window_Low: the lower boundary of the sending window;

[0124] Window_High: The upper boundary of the sending window, equal to the lower boundary of the sending window plus half of the SN space.

[0125] The initial value of Next_SN is 0. When the PDCP entity is newly established, Next_SN starts from the initial value. Every time a PDCP PDU is sent, the current Next_SN is used as its SN, and then the variable Next_SN value is increased by 1, which is used as the SN of the next PDU.

[0126] For example, the first sent PDCP PDU carries SN=0, Next_SN=1, the second sent PDCP PDU carries SN=1, Next_SN=2... and so on.

[0127] The lower boundary of the sending window is update...

Embodiment 2

[0135] Embodiment 2: UM sending window.

[0136] When repeat mode is enabled, PDCP performs transmission window maintenance.

[0137] The sender needs to maintain the following variables:

[0138] Next_SN: the SN corresponding to the next newly sent PDU;

[0139] Window_Low: the lower boundary of the sending window;

[0140] Window_High: The upper boundary of the sending window, equal to the lower boundary of the sending window plus half of the SN space.

[0141] The initial value of Next_SN is 0. When the PDCP entity is newly established, Next_SN starts from the initial value. Every time a PDCP PDU is sent, the current Next_SN is used as its SN, and then the variable Next_SN value is increased by 1, which is used as the SN of the next PDU.

[0142] For example, the first sent PDCP PDU carries SN=0, Next_SN=1, the second sent PDCP PDU carries SN=1, Next_SN=2... and so on.

[0143] The lower boundary of the sending window is updated by the status report of the RLC UM.

[0...

Embodiment 3

[0151] Embodiment 3: Operation of the corresponding receiving device.

[0152] The receiving device adopts the corresponding receiving window for receiving operation, the receiving window is driven by the lower boundary, and the window size is half of the maximum space of the SN.

[0153] The lower boundary of the receiving window is the next highest SN that continuously delivers high-level data.

[0154] When sequential delivery is configured, the data submitted to the upper layer needs to be sorted. For the data received in sequence, it can be directly submitted to the upper layer, and the lower boundary of the receiving window is updated. If there is a receiving gap, it is necessary to start the reordering timer for the gap. When the data at the gap is correctly received before the reordering timer expires, the reordering timer is stopped, and the sequentially received continuous data is submitted to the upper layer, and at the same time Update the lower border of the wind...

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Abstract

The invention relates to the technical field of wireless communication, particularly relates to a method and device for data processing and is used for solving the problem that in the prior art, in a duplication mode, if rates of a plurality of links mismatch, loss of synchronism of HFNs (Hyper Frame Numbers) may be caused, thereby resulting in a safe operation failure. According to the embodiment of the invention, lengths of a sending window and a receiving window are set to be not greater than a half of an SN (Sequence Number) space, so a receiving end can effectively judge HFN values of data, the confusion of the HFNs is avoided, wrong influences caused to state maintenance and safe operation are avoided, and the data transmission continuity and efficiency are ensured.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular, to a method and device for data processing. Background technique [0002] Data transmission between UE (terminal, also called user equipment) and eNB (evolved base station) usually goes through PDCP (Packet Data Convergence Protocol, Packet Data Aggregation Protocol), RLC (Radio Link Control, Radio Link Control), MAC (Medium Access Control, medium access control) and PHY (physical layer) transmission, each layer completes different data processing. PDCP mainly performs security operations and header compression and decompression processing, such as encryption and integrity protection, ROHC (RObust Header Compression, Robust Header Compression) compression and decompression, etc.; RLC mainly completes segmented concatenation and sequential delivery of data. And ARQ (Automatic Repeat reQuest, automatic repeat request) data transmission guarantee; MAC mainl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/18
Inventor 刘佳敏皮埃尔
Owner DATANG MOBILE COMM EQUIP CO LTD
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