Performance of Data Applications over a CDMA Air Interface

(Title was originally Performance Evaluation of HTTP/1.0 in an IS-2000 System) This memo covers the web browsing performance results for a cdma2000 link. The HTTP workload model is characterized by five parameters namely client request size, request waiting time at t he server, the number of objects (connections) in the web page, the object size and the client think time. We employ 2 different optimization metrics in our analysis: the normalized object transfer delay and the normalized page transfer delay expressed in seconds/Kbyte. The simulations are carried out for HTTP/1.0 where the number of TCP connections initiated is equal to the number of objects in the web page. We found that for small objects (1KB) the normalized delay is roughly ten-fold higher than that for comparatively larger objects (>20KB). Multiple parallel TCP connections for the same web page reduce the overall page transfer time. While the object transger times are lower when s single TCP connection is allowed at a time. Increasing the air interface data rate does not help in reducing the delay for small objects. Moreover, the performance is not severely degraded for FER of up to 10%.