An investigation of stack based algorithms for voice-packet transmission in microcellular wireless environments

We present the results of a simulation study that explores the performance of four stack based reservation random access (RRA) protocols for transmitting voice packets over a common radio broadcast channel in a microcellular radio environment. These algorithms provide a mechanism that enables all of the terminals within a microcell to differentiate between available voice and available data time slots; therefore, voice-data integration can be achieved by eliminating competition between voice and data terminals for available slots. We consider voice transmissions over an ideal channel, over a channel subject to memoryless errors, and over a channel with capture. Our results show that by varying the size of the stack (2 cell or 3 cell) and/or the feedback (binary versus ternary) we can make a trade off between voice and data traffic performance.