Multi Criteria Decision Making (MCDM) is useful for choosing a possible objective. The objective is to investigate how far TOPSIS method of MCDM can be utilized for delay sensitive network selection problem. In this paper, TOPSIS method is used for taking decision in delay sensitive network selection for achieving reliability of network selection with Wireless Body Area Network (WBAN) parameters; viz. end-toend- delay, network lifetime and throughput. The best solution for selecting a network model is ranked using this method. MCDM uses infinite number of alternatives for analysis. TOPSIS compares the attributes of each alternative, normalizes each attribute and also calculates the distance of each alternative from the ideal solution. © 2017 IEEE.