Method and device for detecting error data in wireless link control layer

Abstract

The invention discloses a radio link control layer error data detection method. The method includes: a receiving end performs modulo processing on the current reception sequence number and the maximum reception sequence number respectively, and performs a first threshold estimation on the current reception sequence number and the maximum reception sequence number. , compare the difference between the current reception sequence number after the modulo processing and the maximum reception sequence number with the first threshold, when determining that the difference after the modulo processing is greater than the first threshold, determine that the data corresponding to the current reception sequence number is an error The invention also discloses a wireless link control layer error data detection device, through the scheme of the invention, the error data can be detected as soon as possible, so as to be corrected in time, so that the data can be sent and received normally.

Description

technical field [0001] The invention relates to data detection technology, in particular to a method and device for detecting wrong data in a wireless link control layer. Background technique [0002] With the continuous improvement of data traffic under the Long Term Evolution (LTE, Long Term Evolution) standard, the efficiency of data construction and transmission will continue to have higher requirements. During this process, abnormalities such as delays in construction and transmission may occur, which will cause eliminates the possibility of sending erroneous data. [0003] At present, data transmission is mainly completed in three layers: media access control layer (MAC), packet data aggregation layer (PDCP) and radio link control layer (RLC). The window mechanism ensures the legal and orderly transmission of data. Under normal transmission, the windows and data numbers (SN) of the sending end and receiving end are synchronized. [0004] However, the transmission of ...

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Problems solved by technology

[0004] However, the transmission of erroneous data is always unavoidable. Once erroneous data is generated, the existing RLC protocol has no effective detection and processing scheme for this kind of error. It can only wait for the accumulation of errors to finally trigger the reconstruction of the data link. Therefore, The sending and receiving parties will maintain an invalid data connection for a long time until the entire data connection cannot be maintained and the connection is terminated when the conditions for abnormal release of both parties are met. Such a long-term invalid link greatly reduces the transmission efficiency and reliability of data services under the LTE standard. sex

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