ITTC Project


CIF: Small: Fundamentals of Energy-Efficiency in Delay-Sensitive Wireless Communications

Project Award Date: 08-01-2014



Description

This research will increase the understanding of delay-sensitive communication over wireless systems and networks. The objective of the proposed research is to develop a novel fundamental framework incorporating information theory, communication theory, and queueing theory for the analysis and design of energy-efficient wireless systems that support delay-sensitive applications. Previous design of wireless communication systems either neglects the statistical
queueing delay in the performance analysis or neglects the circuit power in the energy analysis. Delay-sensitive applications usually impose requirements on statistical delay-violation probabilities. For example, in the 4th generation (4G) cellular standard, the requirement on delay-violation probability for voice is 2% with the delay bound being 50ms for radio access networks. That is, for voice traffic, more than 98% of the data should experience delay less than 50ms. On
the other hand, energy-efficient design is usually considered with respect to transmit power alone. For a practical system, energy dissipation of both circuits and transmission should be considered. Accordingly, understanding the interplay among resource allocation, modulation and coding schemes (MCS), delay-violation probability, and energy-efficiency requires a new way of thinking and a new system design perspective. To provide fundamental understanding of this interplay, the proposed research is divided into two interconnected research thrusts: 1. The first thrust focuses on delay-sensitive analysis. Information theory, communication theory, and queueing theory will be integrated to provide a framework to analyze wireless system performance by jointly considering decoding error probability and delay-violation probability. 2. The second thrust focuses on energy-efficient design. Both circuit and transmit power will be considered. Transmit power will be further related to the MCS through power amplifier efficiency and processing complexity. Optimal system operations such as resource allocation and MCS adaptation will be identified for energy-efficient communication of delay-sensitive applications.


Investigators

Faculty Investigator(s): Lingjia Liu (PI), Erik Perrins

Student Investigator(s): Rachad Atat, Rubayet Shafin, Hao Chen, Luyao Shang


Partner with ITTC

The Information and Telecommunication Technology Center at the University of Kansas has developed several assistance policies that enhance interactions between the Center and local, Kansas, or national companies. 

ITTC assistance includes initial free consulting (normally one to five hours). If additional support is needed, ITTC will offer one of the following approaches: 

Sponsored Research Agreement

Individuals and organizations can enter into agreements with KUCR/ITTC and provide funds for sponsored research to be performed at ITTC with the assistance of faculty, staff and students.

Licensing and Royalty/Equity Agreement

An ITTC goal is the development of investment-grade technologies for transfer to, and marketing by, local, Kansas, and national businesses. To enhance this process, the Center has developed flexible policies that allow for licensing, royalty, and equity arrangements to meet both the needs of ITTC and the company.

Commercialization Development

Companies with a technology need that can be satisfied with ITTC's resources can look to us for assistance. We can develop a relationship with interested partners that will provide for the development of a technology suited for commercialization.

ITTC Resource Access

ITTC resources, including computers and software systems, may be made available to Kansas companies in accordance with the Center's mission and applicable Regents and University policies.

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