Data transmission method and device
A data transmission method and a technology of a data transmission device, which are applied in the field of communication, can solve problems such as the failure of data packets to pass verification, affect the communication effect, and stop the communication process, so as to achieve the effect of improving communication effect and ensuring normal communication
Active Publication Date: 2019-10-08
PAX COMP TECH SHENZHEN
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However, when the MODEM communication encounters quasi-periodic signal interference, the interference appears in an approximately periodic manner, and each data packet may be interfered and cause a bit error. If the traditional method of retransmitting after verification failure is used , it may appear that the received data packet has not been verified and passed, and eventually the entire communication process will be suspended due to the timeout of the received data, which will seriously affect the communication effect
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[0058] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0059] figure 1 It is a schematic diagram of an internal structure of a terminal in an embodiment. Such as figure 1As shown, the terminal includes a processor connected through a system bus, a non-volatile storage medium, an internal memory, a network interface and an input device. Wherein, the non-volatile storage medium of the terminal stores an operating system, and also includes a data transmission device, and the data transmission device is used to implement a data transmission method. The processor is used to provide computing and control capabilities to support the operation of the entire...
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The invention relates to a data transmission method and apparatus. The data transmission method includes the steps: receiving a data packet transmitted from an opposite terminal; verifying the data packet, and detecting whether the data packet is an error code packet; if the data packet is an error code packet, storing the error code packet, and re-receiving the data packet transmitted from the opposite terminal; and when the number of re-receiving the data packet transmitted from the opposite terminal is greater than a preset threshold, obtaining a correct data packet through splicing according to the stored plurality of error code packets. The data transmission method and apparatus can obtain a correct data packet when bearing the interference from a quasi periodic signal, thus being able to guarantee normal communication and improve the communication effect.
Description
technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and device. Background technique [0002] MODEM (modem) communication is a kind of communication for data transmission on the wired telephone network. The wired telephone network is susceptible to interference from various electromagnetic signals in the external environment, such as glitch interference. A single, very short-duration signal disturbance. Interference can cause signal impairments and cause bit errors, resulting in transient or persistent errors in data transmission. [0003] In the traditional way, the hardware is generally used to filter out the interference in the MODEM communication, but the hardware cannot filter out all the interference in the communication process. For the bit error caused by interference, the method of retransmitting after the verification fails is used to solve it. If the local end receives a data ...
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IPC IPC(8): H04L1/00H04L1/18
Inventor 董时舫董德强
Owner PAX COMP TECH SHENZHEN