From: A wireless caching helper system with heterogeneous traffic and random availability
Notation | Description |
---|---|
\(q_{U}\) | Probability of U requesting a file from external resources, i.e., D, S, or the DC |
\(p_{hD}\) | Probability of cache hit at D |
\(p_{hS}\) | Probability of cache hit at S |
\(q_{S}\) | Probability of S being available for D |
\(q_{C}\) | Probability of S being available for U |
\(q_{D}\) | Probability of D being available for U |
\(\alpha\) | Probability of DC being available for U |
\(P_{i \rightarrow j }\) | Success probability of link \(i \rightarrow j\), when i is transmitting |
\(P_{i \rightarrow j / k}\) | Success probability of link \(i \rightarrow j\), when i and k are transmitting |
\(\mathsf {P}( i \Rightarrow j)\) | Probability of queued node i attempting transmissions to j |