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Table 1 Notation table

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