Study on window-based reliable multicast protocols for wireless LANs

Two reliable multicast protocols for wireless local area networks (LANs) are proposed: a leader-based protocol with a sliding window, LBPW; a leader-based protocol with a sliding window and n-fold acknowledgement reduction, LBPR(n). They are based on a previously proposed leader-based protocol (LBP). Firstly, a pipelining technique is added into the LBP to form the LBPW so as to make frame transmission efficient. Then, an acknowledgement reduction scheme is incorporated into LBPW to form LBPR(n) to alleviate the ACK/NAK implosion problem. Through numerical examples done by a simulation approach, we demonstrate that these two reliable multicast protocols outperform LBP.