Project Details
Projekt
Utility-per-cost maximization in decentralized wireless interference networks
Applicant
Professor Dr.-Ing. Slawomir Stanczak
Subject Area
Electronic Semiconductors, Components and Circuits, Integrated Systems, Sensor Technology, Theoretical Electrical Engineering
Term
from 2009 to 2015
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 142193896
Device-to-device communications (D2D) is regarded as one of the key technologies for enhancing the performance of cellular networks. As an underlay to cellular networks, D2D communications can be seen as a network-assisted interference channel where D2D links are assisted by a number of infrastructure nodes (e.g. macro base stations or relay stations) while reusing the cellular resources. In contrast to unassisted approaches usually considered in the context of ad-hoc networking technologies, assistance by the cellular infrastructure promises more efficient spectrum utilization and higher reliability. On the other hand, D2D communications poses some fundamental challenges, including distributed functional distribution, node selection and network-assisted interference management and identification.This project addresses these challenges in the context of network-assisted D2D communications where D2D links treat interference caused by other links as noise. The objective is to create a novel theoretical framework for interference-aware resource allocation and interference management in heterogeneous networks with network-assisted D2D communications links that reuse the resources of the infrastructure nodes. To this end, we are going to develop novel algorithms for interference identification that refers to the process of collecting measurements at different network nodes and extracting the required interference information from these measurements. Based on the extracted information, we will develop novel mechanisms for resource allocation and interference management where the decisionmaking process at D2D links is supported by a number of infrastructure nodes. When developing the algorithms and mechanisms, crucial aspects that need to be addressed concern functional splitting between D2D devices and infrastructure nodes, optimal mode of operation (direct versus indirect using infrastructure nodes) and node selection for D2D assistance. Addressing these problems in an optimal way will significantly reduce feedback overhead between D2D devices and infrastructure nodes.In order to achieve the project objectives, we will use and combine statistical and game theoretical approaches. In particular, distributed algorithms for network state information developed in the ongoing project provide a solid basis for the development of novel robust and efficient algorithms for distributed network-assisted interference identification based on measurements taken at different network nodes.The extracted interference information will be incorporated into different decision-making processes based on multi-armed bandit games to design multi-player bandit games for resource allocation on interference channels.
DFG Programme
Priority Programmes
