  Data applications may typically tolerate a moderate delay before packet
transmission between user equipment (UE) and cell begins. This delay can be
taken advantage to reduce the communication distance, improve coverage
probability, and increase overall energy-efficiency of the small cell network.
To demonstrate such merits, we suggest a simple access scheme and analyze the
distribution of coverage probability and throughput as a function of delay and
transmit distance. Sufficient number of small base stations (SBSs) handle the
peak traffic load. To improve energy-efficiency of the network, a number of
SBSs are switched off at low traffic periods. Energy-efficiency can be further
improved by turning all of the SBSs on and off, rather than selecting a subset
and leaving them off. By doing so, coverage probability and bit-rate can be
improved by delaying their transmissions and waiting for a closer SBS to become
available. Results show that by turning SBSs on and off continuously and taking
advantage of initial delay to connect a SBS yield an order of magnitude
improvement in energy-efficiency, improves the coverage probability
significantly at low signal to interference and noise (SINR) regime.
