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无线接入网络的时延优化算法

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针对无线接入网络,提出一种轻量级时延优化算法——跨层反压拥塞控制算法.该算法是一种不依赖流量源端和用户终端设备,可独立部署在无线网络设备中的算法.该算法依据队列长度,空口发送速率等信息,动态调整TCP确认报文(TCP ACK)中的接收窗口字段,在降低业务端到端时延的同时,降低无线网络设备总缓存,保障无线接入设备(AP)的总吞吐能力(吞吐损耗<5%).对比传统的Cubic拥塞控制算法,在AP为拥塞点的场景下,可降低无线接入网络时延30%—40%;同时降低AP设备40%的缓存,降低丢包风险.
Delay optimization algorithm for wireless access networks
In wireless access networks,it proposed a lightweight delay optimization algorithm-cross-layer backpressure conges-tion control algorithm.The algorithm is a traffic source-independent,user terminal device-independent algorithm that can be deployed independently in wireless network devices.Based on queue length,air interface transmission rate,and other information,the algorithm dy-namically adjusts the receive window field of TCP acknowledgment packets(TCP ACK)to reduce end-to-end latency while reducing the to-tal buffer of wireless network devices and ensuring the total throughput capacity of wireless access points(throughput loss<5%).Compared with the traditional Cubic congestion control algorithm,this algorithm can reduce wireless access network latency by 30%to 40%in scenari-os where the access point(AP)is congested,while also reducing the buffer of AP devices by 40%and lowering the risk of packet loss.

Congestion control algorithmLow latencyWireless access networks

蔡明杰、魏建刚、张校臣

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浙江大学,浙江杭州 310027

东南大学,江苏南京 210018

南京航空航天大学,江苏南京 210016

拥塞控制算法 低时延 无线接入网络

2024

通信与信息技术
四川省通信学会

通信与信息技术

影响因子:0.223
ISSN:1672-0164
年,卷(期):2024.(4)
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