SEMIDYNAMIC AND DYNAMIC TRANSMISSION ALGORITHMS FOR MULTIPLEXING VOICE WITH DATA

The design of hybrid transmission algorithms for the multiplexing of v oice and data over a common digital channel is of interest to various communication networks, including cellular radio and high-speed topolo gies. In environments where the characteristics of the voice and data traffics may vary dynamically, the issue is the deployment of hybrid m ultiplexing algorithms (HMAs) which satisfy the constraints imposed by the voice traffic, while they simultaneously attain high channel util ization and induce low implementation overhead. In this paper, we prop ose, evaluate, and compare two HMAs: a semidynamic and a dynamic. The former induces lower implementation overhead than the latter, but it i s applicable only to environments where the rate of the voice traffic may vary relatively slowly and its statistics are parametrically known . The semidynamic HMA induces frame structures, where the capacity all ocation per frame, for the voice versus data traffic, is dictated by a superimposed traffic monitoring algorithm. The dynamic HMA, on the ot her hand, assigns each channel slot to voice versus data packets dynam ically; it requires no statistical knowledge about the voice traffic, at the expense of significantly increased implementation overhead.