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Study on Uplink Throughput of Radio Resource Sub-granting and Shortening TTI Schemes for Overlay D2D

Authors:
M.Sc. Dariush M. Soleymani
M. Sc. Abubaker Matovu Waswa
Prof. Dr.-Ing. Jens Mückenheim
Prof. Dr.-Ing. habil. Andreas Mitschele-Thiel
Typ:
Conferences
Status:
accepted
Date of publication
05/16/2018
Abstract:
Capacity, reliability and latency act as major requirements
of new applications in future cellular networks.
Device to device (D2D) communication is seen as a promising
solution to achieve these requirements. However, the reliability
and latency requirements can be achieved through resource
reservation for D2D communication (overlay D2D) at the cost
of high resources wastage. This is especially true for applications
with small payload and massive number of devices expected
for D2D communication. Two schemes have been proposed to
minimize the impact on resource wastage while maintaining the
required latency: Resource allocation in a finer granularity, i.e.
shortening transmission time interval (sTTI) and fast delegation
of already allocated, but unused resources, i.e. sub-granting. In
this paper, we numerically evaluate the uplink cell throughput for
both schemes. The results indicate a better uplink cell throughput
for the sub-granting scheme compared to the sTTI schemes,
which improves radio resource utilization for the small payload
applications.
Bibtex