PRIME ARQ: a novel ARQ scheme for high-speed wireless ATM-design, implementation and performance evaluation

Error control for high-speed wireless ATM (WATM) operating at 20 Mbps or higher is an important research topic. Automatic repeat request (ARQ) for WATM is required to achieve high throughput as well as high transmission quality, i.e., low CLR (cell loss ratio). Selective repeat (SR) and go-back-N (GBN) are typical ARQ schemes. Though SR-ARQ is superior to GBN-ARQ in terms of throughput performance, the implementation complexity of SR-ARQ's control procedures prohibits its application to high-speed wireless systems. GBN-ARQ, on the other hand, cannot avoid serious throughput degradation due to fairly high BER caused by multipath fading and shadowing. To solve this problem, this paper proposes a novel ARQ scheme named PRIME-ARQ (partial selective repeat superimposed on GBN-ARQ) for TDMA-based WATM. PRIME-ARQ achieves high throughput performance, almost equal to selective repeat ARQ, with a simple algorithm resulting in reduced implementation complexity for high speed operation. This paper describes the design, implementation, and performance of the proposed PRIME-ARQ. In addition, it shows the experimental results using a PRIME-ARQ processor.