Schemes of bandwidth allocation for the transmission of medical data

In this paper, two bandwidth allocation schemes for the transmission of medical data in the IEEE 802.11n based WLAN are proposed. These two schemes are based on the same idea: offline medical data are transmitted on the subcarriers for online traffic when these subcarriers are available; otherwise, these data are stored in patient devices. This is a tradeoff between the traffic load in the WLAN and the memory size of patient devices. Based on this idea, two schemes are designed to save the required number of subcarriers. The difference between these two schemes is that the first scheme only focuses on saving subcarriers, while the second scheme takes into account saving subcarriers and the security of data stored in patient devices. Next, the relationship of device memory and the probability of illegal access to data is discussed. Finally, the number of required subcarriers and the probability of illegal access to data are compared in these two proposed schemes. In addition, these two proposed schemes are also compared with a traditional scheme, which is viewed as a benchmark.