Data frame aggregation method with fault-tolerant function

Abstract

The invention discloses a data frame aggregation method with a fault-tolerant function. The method mainly solves the problem of poor fault-tolerant performance caused by irrational frame structures in the existing data frame aggregation mechanism. The implementation process of the method is as follows: a transmitting node aggregates data frames when aggregation conditions are satisfied; the transmitting node generates a sub-frame header, comprising an offset value domain and a length domain, for each sub-frame, and combines each sub-frame header into a first part of the load; the transmitting node orderly stores the each combined sub-frame header, a filling domain and each sub-frame to form the complete load; the transmitting node adds a header field and a tail field for the load, and then transmits the aggregated frames; and a receiving node executes disassembly operations after receiving the aggregated frames, reads corresponding sub-frames according to the offset valve domain and the length domain of each sub-frame header, and forwards the sub-frames to an upper layer. The method effectively improves the fault-tolerant performance of the data frame aggregation mechanism for transmission error codes while improving the channel transmission efficiency, so that the method can be widely used in various data communication networks.

Description

technical field [0001] The invention belongs to the technical field of communication, relates to a data frame aggregation method, and can be applied to various data communication networks. Background technique [0002] In a data communication network, in order to improve channel utilization, it is usually necessary to adopt an aggregation / splitting mechanism on a certain link in the network, or between a sending node and a receiving node, that is, at the sending node, multiple Data frames are aggregated and split accordingly at the receiving node. Aggregating data frames at the sending node can effectively improve channel transmission efficiency: when there are a large number of data frames to be transmitted at the sending node, especially when the length of these data frames is relatively short, if the data frame aggregation mechanism is not used for transmission, Each data frame must be individually encapsulated, resulting in low transmission efficiency of valid data; at ...

AI Technical Summary

Problems solved by technology

[0004] The above mechanism provides a simple implementation method for the aggregation of data frames in the data communication network, but this method has deficiencies in fault tolerance performance

For example, when the aggregated frame has a bit error during network transmission and the error bit appears in the i-th subframe length field, when the receiving node splits the upper-layer data frame, it will wrongly determine the data length of the i-th subframe instead of The corresponding subframe cannot be correctly restored; and each subframe after the i-th subframe will be affected and cannot be restored correctly, because the length extraction of each field after the i-th subframe length field will have deviations and this error will Continues until the end of the aggregation frame

Therefore, the fault tolerance performance of the existing data frame aggregation mechanism is poor, resulting in a high frame loss rate of effective data frames, thereby reducing the effective data throughput of the data communication network to a certain extent

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