UDP-based data transmission rate self-adaption method in wireless network environment

Abstract

The invention relates to the field of wireless transmission, and discloses a UDP-based data transmission rate self-adaption method in a wireless network environment. The method comprises the followingsteps: a data sending end receives a sending task, performs decomposition, stores data contents in a task pool, and sends task data information to a control center at the same time; the control center allocates the task information to a currently valid data transmission queue in the queue pool according to the principle of uniform distribution; a sending thread in a data sending thread pool readsand sends data from the data transmission queue in a queue polling manner; the control center receives a data confirmation message sent by a receiving end, and the control center calculates a data transmission success rate according to the data confirmation message, and adjusts the sending rate according to the success rate; and the unconfirmed data are placed in the data transmission queue againand are retransmitted. By adoption of the technical scheme provided by the invention, the data transmission rate under a wireless channel is improved, and meanwhile, the problem of data transmissionfailure caused by channel congestion due to data burst within a short time is solved.

Description

technical field [0001] The invention relates to the technical field of wireless transmission, in particular to a UDP-based data transmission rate adaptive method in a wireless network environment. Background technique [0002] In ultrashort wave, 3G, 4G, satellite and other wireless network environments, channel resources are relatively limited, and there will be bandwidth restrictions, and as the location of communication nodes changes, signal coverage also has the characteristics of ups and downs. Usually, in order to ensure the reliable transmission of data, some application systems directly use TCP for transmission. Under such a wireless channel, the overhead of TCP is large, the handshake mechanism is too complicated, and the channel overhead is large. It is not suitable for limited channel capabilities. Maximize utilization; some application systems use UDP transmission, a confirmation message and retransmission mechanism to ensure reliable transmission, but most of th...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in view of the problems of low channel utilization and poor transmission effect in the current transmission method in the wireless network environment, the present invention provides a UDP-based data transmission rate adaptive method in the wireless network environment In the wireless channel, the UDP transmission mechanism is used to maximize the use of the wireless channel bandwidth, and at the same time, the transmission rate is controlled based on the feedback of the UDP transmission, which is as close as possible to the current actual bandwidth value, and the transmission rate is adaptive.

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