Abstract
In this paper, a mutual interference-based ensured relay selection and transmission scheme is derived in millimeter Wave (mmWave) wireless personal area networks (WPANs). First, the personal basic service set control point/access point (PCP/AP) assesses a link as a non-Line-of-sight (NLoS) one if it has received the feedback from all the neighbor stations (STAs) in the common service period (SP) except for the receiver STA of the NLoS link. After then, the PCP/AP should select a relay STA for the NLoS link based on the fed back information from the NLoS link interfered STAs. At last, the PCP/AP should schedule the relay link composed of the selected relay STA and the two STAs of the NLoS link into a proper SP without disturbing the correctly decoded performance of other links in the same SP according to the signal to noise plus interference ratio (SINR) evaluation criterion. Both theoretical analysis and simulation results show that the proposed scheme can largely improve the delay performance of mmWave systems compared with the random relay selection method.
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