Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Delay and Communication Tradeoffs for Blockchain Systems with
  Lightweight IoT Clients   The emerging blockchain protocols provide a decentralized architecture that
is suitable of supporting Internet of Things (IoT) interactions. However,
keeping a local copy of the blockchain ledger is infeasible for low-power and
memory-constrained devices. For this reason, they are equipped with lightweight
software implementations that only download the useful data structures, e.g.
state of accounts, from the blockchain network, when they are updated. In this
paper, we consider and analyze a novel scheme, implemented by the nodes of the
blockchain network, which aggregates the blockchain data in periodic updates
and further reduces the communication cost of the connected IoT devices. We
show that the aggregation period should be selected based on the channel
quality, the offered rate, and the statistics of updates of the useful data
structures. The results, obtained for the Ethereum protocol, illustrate the
benefits of the aggregation scheme in terms of a reduced duty cycle of the
device, particularly for low signal-to-noise ratios, and the overall reduction
of the amount of information transmitted in downlink (e.g., from the wireless
base station to the IoT device). A potential application of the proposed scheme
is to let the IoT device request more information than actually needed, hence
increasing its privacy, while keeping the communication cost constant. In
conclusion, our work is the first to provide rigorous guidelines for the design
of lightweight blockchain protocols with wireless connectivity.

33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga