5G环境下具有介质访问控制感知的无线网络编码方案

Wireless network coding scheme with media access control awareness in 5G environment

为优化5G无线网络环境下单波流的网络编码,提出一种具有介质访问控制(MAC)感知的随机线性网络编码方案。由于流间网络编码假设条件是即时解码和反馈信道可靠,其在5G环境下不多常见。因此,所提方案使用随机化处理方式,从有限域GF(2)中均匀随机地选择出数据包变量,源节点不需要采集来自接收器的反馈帧,通过优化MAC开销来缓解数据包相关信息的影响。在TelosB motes试验台进行验证,结果表明,对于单跳数据发布和多跳无线路由,所提方案使用Block ACK握手,可以高效采集反馈信息,且能够大幅降低数据包传输时间,最高降低42%。

To optimize the network coding of single wave flow in 5G wireless network environment,a random linear net-work coding scheme with medium access control(MAC)sensing is proposed.Since the assumption of inter stream net-work coding is that the real-time decoding and feedback channel are reliable,which is not common in 5G environment,the proposed scheme uses a randomized processing method to select the packet variables uniformly and randomly from the finite field GF(2).The source node does not need to collect the feedback frames from the receiver,and alleviates the impact of packet related information by optimizing the MAC overhead.It is verified on the TelosB motes test-bed.The results show that for single hop data publishing and multi hop wireless routing,the proposed scheme uses block ACK handshake,which can efficiently collect feedback information,and can significantly reduce the packet transmission time by up to 42%.