A Study of Low-Latency, High-Reliability Transmission Technology and Wi-Fi Deployment Optimization in 5g Lwa

The fifth generation 3GPP E-UTRA Release 13 focuses on three main topics: (1) mobile communication access, (2) massive communication access, and (3) low-latency, high-reliability transmission. In the two-year research project, we will focus onto two of the three main topics, including (1) the design of mobile communication access on LTE-A Wi-Fi aggregation and (2) the improvement of latency on the designed mechanism to provide a low-latency, high-reliability transmission. The current LTE-A provides three types of communications for Wi-Fi aggregation including licensed-assisted access (LAA), MuLTEfire, and LTE Wi-Fi link aggregation (LWA). LAA and MuLTEfire access the Wi-Fi spectrum with the LTE-A macro base station (MBS), while LWA accesses the Wi-Fi spectrum with the Wi-Fi access point (AP). Under these conditions, it is easy to see that under the coverage of LAA, the 表 CM02 共 2 頁 第 2 頁 amount of Wi-Fi APs competing for the bandwidth will be substantially more than that of LWA. Under these assumptions, LWA can obtain a better transmission opportunity and provide higher transmission throughput than LAA. In the first year of the research, we will investigate a solution to further enhance the transmission of LWA by decreasing the MAC overhead of the CSMA/CA mechanism. In the second year of the research, we point out the problem of the dense existing Wi-Fi deployment and provide a solution to the amount of deployable Wi-Fi for LWA. We compare the results of LAA and LWA to show that LWA is overall the better solution.

Project ID:PB10507-2946
External Project ID:MOST105-2221-E182-020