Wireless network congestion control method, device and system

Abstract

The present invention provides a wireless network congestion control method, device and system, wherein the method includes: analyzing the received data packet to obtain a confirmation packet; monitoring the transmission capability parameter of the wireless channel in real time, and according to the transmission capability parameter value and the number of data packets to determine the number of splits of the confirmation packet, wherein the sum of the number of data packets and the number of splits of the confirmation packet is less than or equal to the value of the transmission capability parameter; the splitting operation is performed on the confirmation packet according to the number of splits, and The split confirmation packet is sent to the server based on the sliding window protocol. The invention avoids network congestion caused by slow window growth when the channel condition is good, or packet loss caused by excessive expansion of the sending window when the channel is poor.

Description

technical field [0001] The invention relates to congestion control in the field of wireless communication, in particular to a wireless network congestion control method and device. Background technique [0002] At present, the construction of wireless networks has begun to take shape, and its users have also begun to grow explosively. For the ever-increasing demand for data transmission, it is required to manage transmission resources more intelligently. Due to rapid changes in the wireless transmission environment and uncertain delays on the wired side, sliding window protocols such as the Transport Control Protocol (TCP) cannot effectively adapt to the wireless environment, affecting the effective use of wireless resources and user experience. Existing improvement schemes, such as the TCP Performance Enhancement Algorithm (TCP Performance Enhance, abbreviated as TPE algorithm), is to add a TCP proxy module in the radio network controller (RadioNetwork Control, abbreviated ...

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Problems solved by technology

[0003] Although the TPE algorithm can improve the problem of network congestion caused by the long duration of the slow start phase, it uses fixed parameters to configure the number of ACK packet splits to increase the number of ACK packets, so that the number of ACK packet splits cannot quickly adapt to the wireless channel and Receiving capacity, which may cause excessive fragmentation, resulting in the expansion of the sending window of the TCP-based server based on the sliding window protocol too fast, making the traffic much larger than the air interface throughput of the channel, or insufficient fragmentation, which cannot maximize the improvement of network congestion; or The TCP proxy buffer space is limited, but the ACK packet is still split, resulting in buffer overflow and packet loss

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