ACES, which is our previous work [11], is compared
with AASMP in this section. Figure 11 shows the RTT
(round-trip time) of these two systems. ACES uses AJAX to
transmit data and AASMP relies on websocket. The RTT is
measured by issuing a request from client side and
calculating the returning time of the request. From the result,
websocket shows significant improvement at RTT. This is of
much help in reducing the response time of AASMP.