Consensus-Before-Talk: Distributed Dynamic Spectrum Access via Distributed Spectrum Ledger Technology
This addresses spectrum access inefficiencies for secondary users in wireless networks, though it appears incremental as it builds on existing distributed ledger and spectrum access methods.
The paper tackles the problem of collision-free distributed dynamic spectrum access by proposing Consensus-Before-Talk (CBT), an architecture using distributed ledger technology, and shows that CBT achieves lower end-to-end latency compared to Listen-Before-Talk, especially under high traffic conditions.
This paper proposes Consensus-Before-Talk (CBT), a spectrum etiquette architecture leveraged by distributed ledger technology (DLT). In CBT, secondary users' spectrum access requests reach a consensus in a distributed way, thereby enabling collision-free distributed dynamic spectrum access. To achieve this consensus, the secondary users need to pay for the extra request exchanging delays. Incorporating the consensus delay, the end-to-end latency under CBT is investigated. Both the latency analysis and numerical evaluation validate that the proposed CBT achieves the lower end-to-end latency particularly under severe secondary user traffic, compared to the Listen-Before-Talk (LBT) benchmark scheme.