基于移频Wi-Fi的电力无线通信技术研究

Research on Power Wireless Communication Technology Based on Shift Frequency Wi-Fi

为了提升10 kV终端通信接入网在城郊、农村等地区的覆盖率,设计了由无线基站和无线终端组成的电力无线专网。在成熟的Wi-Fi芯片的基础上,设计了移频射频模块满足物理层频率要求;设计了TDMA时间片控制机制,克服CSMA/CA侦听机制与ACK超时重传机制在室外长距离通信存在的问题。仿真结果表明,当网络出现较大负载时,该电力无线专网能够获得更大的网络吞吐量和更小的接入延时,可为10 kV终端通信接入网室外"最后一公里"覆盖提供一种稳定可靠的通信手段。

In order to increase 10 kV terminal communication access network coverage in suburbs and rural area, a power wireless network consist of base station and terminal is established in this paper. The designed shift frequency RF module based on mature Wi-Fi chip meets the requirement of PHY frequency, TDMA time slice control mechanism overcomes the problem of CSMA/CA interception mechanism and ACK timeout retransmission mechanism during outdoor long distance communication. The simulation results show that the power wireless network can achieve larger throughput and smaller access delay time with heavy network load. The power wireless network can provide a stable and reliable means of communication for ＂the last one kilometer＂ outdoor coverage of the 10 kV terminal communication access network.