Paper Info
Title
Optimization Of Primary Exclusive Region In Spatial Grid-Based Spectrum Database Using Stochastic Geometry
Abstract
In database-driven spectrum sharing for 5G mobile networks, a primary user (PU) may experience harmful interference caused by unpredictable propagation paths, even when secondary users (SUs) follow a spectrum sharing policy established on the basis of a database. A framework for determining the optimal radius of a circular primary exclusive region (PER) on the basis of SU's information has been proposed. However, a practical PER can be complex-shaped and should be designed on the basis of the directivity of the PU antenna, and the SU information in each region. In this paper, we present a stochastic geometry analysis in a spatial grid-based spectrum database, and propose a design for an optimal complex-shaped PER. The database determines the transmission probability of the SUs on each divided annular sector. By regarding the SU's locations on each annular sector as an inhomogeneous Poisson point process, we analytically derive a PU's outage probability (OP), where the PU's OP is defined as the probability that the aggregate interference power at a PU from the SUs exceeds a threshold. Using the derived expression, we formulate an optimization problem to maximize the number of transmitting SUs, which optimizes the SU's transmission probability on each annular sector. Then, we numerically evaluate the solution of the optimization problem in various scenarios. The results show that the accuracy of the PER improves as the grid size decreases. In addition, we successfully design a complex-shaped PER with holes in which the SUs are permitted to transmit.
Year
Venue
Field
2017
2017 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC)
Stochastic geometry,Grid size,Directivity,Computer science,Interference (wave propagation),Poisson point process,Optimization problem,Database,Grid,Cognitive radio
DocType
ISSN
Citations 
Conference
1550-3607
0
PageRank 
References 
Authors
0.34
11
4
Name
Order
Citations
PageRank
Shota Yamashita193.66
Koji Yamamoto28616.61
Takayuki Nishio310638.21
Masahiro Morikura418463.42