Prioritized Information Recovery for Wireless Link-Layer Communication
In this paper, the authors develop Prioritized Automatic Code Embedding (PACE) link-layer protocol to achieve preferred data recovery order across connections, while maintaining stable and reliable data flows over wireless networks. They classify link-layer traffic arrivals into different priorities based on the packet delay constraint and the distortion associated with the loss of that packet. The traffic arriving in each priority class is modeled as a poisson process. Consequently, they formulate the link-layer buffer as a multiclass M/G/1 priority queuing system where the decoding process (service process) of the PACE buffer is captured by a nonhomogeneous geometric distribution.